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crypto/...: more fixes for bug 2841

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1) Remove the Reset() member in crypto/aes and crypto/des (and
   document the change).
2) Turn several empty error structures into vars. Any remaining error
   structures are either non-empty, or will probably become so in the
   future.
3) Implement SetWriteDeadline for TLS sockets. At the moment, the TLS
   status cannot be reused after a Write error, which is probably fine
   for most uses.
4) Make crypto/aes and crypto/des return a cipher.Block.

R=rsc, r
CC=golang-dev
https://golang.org/cl/5625045
This commit is contained in:
Adam Langley 2012-02-13 12:38:45 -05:00
parent a52fb458df
commit cdd7e02583
17 changed files with 232 additions and 487 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

227
doc/go1.html
View File

@ -855,38 +855,23 @@ few programs beyond the need to run <code>go fix</code>.
This category includes packages that are new in Go 1.
</p>
<h3 id="bufio">The bufio package</h3>
<h3 id="crypto_aes_des">The crypto/aes and crypto/des packages</h3>
<p>
In Go 1, <a href="/pkg/bufio/#NewReaderSize"><code>bufio.NewReaderSize</code></a>
and
<a href="/pkg/bufio/#NewWriterSize"><code>bufio.NewWriterSize</code></a>
functions no longer return an error for invalid sizes.
If the argument size is too small or invalid, it is adjusted.
In Go 1, the <code>Reset</code> method has been removed. Go does not guarantee
that memory is not copied and therefore this method was misleading.
</p>
<p>
The cipher-specific types <code>*aes.Cipher</code>, <code>*des.Cipher</code>,
and <code>*des.TripleDESCipher</code> have been removed in favor of
<code>cipher.Block</code>.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
</p>
<h3 id="bufio">The compress/flate, compress/gzip and compress/zlib packages</h3>
<p>
In Go 1, the <code>NewWriterXxx</code> functions in
<a href="/pkg/compress/flate"><code>compress/flate</code></a>,
<a href="/pkg/compress/gzip"><code>compress/gzip</code></a> and
<a href="/pkg/compress/zlib"><code>compress/zlib</code></a>
all return <code>(*Writer, error)</code> if they take a compression level,
and <code>*Writer</code> otherwise. Package <code>gzip</code>'s
<code>Compressor</code> and <code>Decompressor</code> types have been renamed
to <code>Writer</code> and <code>Reader</code>. Package <code>flate</code>'s
<code>WrongValueError</code> type has been removed.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
Remove the calls to Reset. Replace uses of the specific cipher types with
cipher.Block.
</p>
<h3 id="crypto_elliptic">The crypto/elliptic package</h3>
@ -939,64 +924,6 @@ to be implemented in the future.
No changes will be needed.
</p>
<h3 id="encoding_binary">The encoding/binary package</h3>
<p>
In Go 1, the <code>binary.TotalSize</code> function has been replaced by
<a href="/pkg/encoding/binary/#Size"><code>Size</code></a>,
which takes an <code>interface{}</code> argument rather than
a <code>reflect.Value</code>.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
</p>
<h3 id="encoding_xml">The encoding/xml package</h3>
<p>
In Go 1, the <a href="/pkg/encoding/xml/"><code>xml</code></a> package
has been brought closer in design to the other marshaling packages such
as <a href="/pkg/encoding/gob/"><code>encoding/gob</code></a>.
</p>
<p>
The old <code>Parser</code> type is renamed
<a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> and has a new
<a href="/pkg/encoding/xml/#Decoder.Decode"><code>Decode</code></a> method. An
<a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a> type was also
introduced.
</p>
<p>
The functions <a href="/pkg/encoding/xml/#Marshal"><code>Marshal</code></a>
and <a href="/pkg/encoding/xml/#Unmarshal"><code>Unmarshal</code></a>
work with <code>[]byte</code> values now. To work with streams,
use the new <a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a>
and <a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> types.
</p>
<p>
When marshaling or unmarshaling values, the format of supported flags in
field tags has changed to be closer to the
<a href="/pkg/encoding/json"><code>json</code></a> package
(<code>`xml:"name,flag"`</code>). The matching done between field tags, field
names, and the XML attribute and element names is now case-sensitive.
The <code>XMLName</code> field tag, if present, must also match the name
of the XML element being marshaled.
</p>
<p>
<em>Updating</em>:
Running <code>go fix</code> will update most uses of the package except for some calls to
<code>Unmarshal</code>. Special care must be taken with field tags,
since the fix tool will not update them and if not fixed by hand they will
misbehave silently in some cases. For example, the old
<code>"attr"</code> is now written <code>",attr"</code> while plain
<code>"attr"</code> remains valid but with a different meaning.
</p>
<h3 id="expvar">The expvar package</h3>
<p>
@ -1046,15 +973,6 @@ The <code>Duration</code> flag is new and affects no existing code.
Several packages under <code>go</code> have slightly revised APIs.
</p>
<p>
A concrete <code>Mode</code> type was introduced for configuration mode flags
in the packages
<a href="/pkg/go/scanner/"><code>go/scanner</code></a>,
<a href="/pkg/go/parser/"><code>go/parser</code></a>,
<a href="/pkg/go/printer/"><code>go/printer</code></a>, and
<a href="/pkg/go/doc/"><code>go/doc</code></a>.
</p>
<p>
The modes <code>AllowIllegalChars</code> and <code>InsertSemis</code> have been removed
from the <a href="/pkg/go/scanner/"><code>go/scanner</code></a> package. They were mostly
@ -1063,16 +981,6 @@ useful for scanning text other then Go source files. Instead, the
for that purpose.
</p>
<p>
The <a href="/pkg/go/scanner/#ErrorHandler"><code>ErrorHandler</code></a> provided
to the scanner's <a href="/pkg/go/scanner/#Scanner.Init"><code>Init</code></a> method is
now simply a function rather than an interface. The <code>ErrorVector</code> type has
been removed in favor of the (existing) <a href="/pkg/go/scanner/#ErrorList"><code>ErrorList</code></a>
type, and the <code>ErrorVector</code> methods have been migrated. Instead of embedding
an <code>ErrorVector</code> in a client of the scanner, now a client should maintain
an <code>ErrorList</code>.
</p>
<p>
The set of parse functions provided by the <a href="/pkg/go/parser/"><code>go/parser</code></a>
package has been reduced to the primary parse function
@ -1081,17 +989,6 @@ convenience functions <a href="/pkg/go/parser/#ParseDir"><code>ParseDir</code></
and <a href="/pkg/go/parser/#ParseExpr"><code>ParseExpr</code></a>.
</p>
<p>
The <a href="/pkg/go/printer/"><code>go/printer</code></a> package supports an additional
configuration mode <a href="/pkg/go/printer/#Mode"><code>SourcePos</code></a>;
if set, the printer will emit <code>//line</code> comments such that the generated
output contains the original source code position information. The new type
<a href="/pkg/go/printer/#CommentedNode"><code>CommentedNode</code></a> can be
used to provide comments associated with an arbitrary
<a href="/pkg/go/ast/#Node"><code>ast.Node</code></a> (until now only
<a href="/pkg/go/ast/#File"><code>ast.File</code></a> carried comment information).
</p>
<p>
The type names of the <a href="/pkg/go/doc/"><code>go/doc</code></a> package have been
streamlined by removing the <code>Doc</code> suffix: <code>PackageDoc</code>
@ -1189,16 +1086,10 @@ The affected items are:
</ul>
<p>
The <code>Request.RawURL</code> field has been removed; it was a
Also, the <code>Request.RawURL</code> field has been removed; it was a
historical artifact.
</p>
<p>
The <code>Handle</code> and <code>HandleFunc</code>
functions, and the similarly-named methods of <code>ServeMux</code>,
now panic if an attempt is made to register the same pattern twice.
</p>
<p>
<em>Updating</em>:
Running <code>go fix</code> will update the few programs that are affected except for
@ -1235,7 +1126,9 @@ packages.
The old <code>image.ColorImage</code> type is still in the <code>image</code>
package but has been renamed
<a href="/pkg/image/#Uniform"><code>image.Uniform</code></a>,
while <code>image.Tiled</code> has been removed.
while <code>image.Tiled</code>
has been renamed
<a href="/pkg/image/#Repeated"><code>image.Repeated</code></a>.
</p>
<p>
@ -1296,6 +1189,7 @@ This table lists the renamings.
<td colspan="2"><hr></td>
</tr>
<tr><td>image.ColorImage</td> <td>image.Uniform</td></tr>
<tr><td>image.Tiled</td> <td>image.Repeated</td></tr>
</table>
<p>
@ -1320,18 +1214,6 @@ and
Running <code>go fix</code> will update almost all code affected by the change.
</p>
<h3 id="log_syslog">The log/syslog package</h3>
<p>
In Go 1, the <a href="/pkg/log/syslog/#NewLogger"><code>syslog.NewLogger</code></a>
function returns an error as well as a <code>log.Logger</code>.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
</p>
<h3 id="mime">The mime package</h3>
<p>
@ -1378,27 +1260,7 @@ Code that uses the old methods will fail to compile and must be updated by hand.
The semantic change makes it difficult for the fix tool to update automatically.
</p>
<h3 id="os">The os package</h3>
<p>The <code>Time</code> function has been removed; callers should use
the <a href="/pkg/time/#Time"><code>Time</code></a> type from the
<code>time</code> package.</p>
<p>The <code>Exec</code> function has been removed; callers should use
<code>Exec</code> from the <code>syscall</code> package, where available.</p>
<p>The <code>ShellExpand</code> function has been renamed to <a
href="/pkg/os/#ExpandEnv"><code>ExpandEnv</code></a>.</p>
<p>The <a href="/pkg/os/#NewFile"><code>NewFile</code></a> function
now takes a <code>uintptr</code> fd, instead of an <code>int</code>.
The <a href="/pkg/os/#File.Fd"><code>Fd</code></a> method on files now
also returns a <code>uintptr</code>.</p>
<p><em>Updating</em>: Code will fail to compile and must be updated
by hand. </p>
<h4 id="os_fileinfo">The os.FileInfo type</h4>
<h3 id="os_fileinfo">The os.FileInfo type</h3>
<p>
Go 1 redefines the <a href="/pkg/os/#FileInfo"><code>os.FileInfo</code></a> type,
@ -1639,17 +1501,6 @@ Existing code is unaffected, although benchmarks that use <code>println</code>
or <code>panic</code> should be updated to use the new methods.
</p>
<h3 id="testing_script">The testing/script package</h3>
<p>
The testing/script package has been deleted. It was a dreg.
</p>
<p>
<em>Updating</em>:
No code is likely to be affected.
</p>
<h3 id="url">The url package</h3>
<p>
@ -1718,6 +1569,50 @@ Code that uses the old fields will fail to compile and must be updated by hand.
The semantic changes make it difficult for the fix tool to update automatically.
</p>
<h3 id="xml">The xml package</h3>
<p>
In Go 1, the <a href="/pkg/encoding/xml/"><code>xml</code></a> package
has been brought closer in design to the other marshaling packages such
as <a href="/pkg/encoding/gob/"><code>encoding/gob</code></a>.
</p>
<p>
The old <code>Parser</code> type is renamed
<a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> and has a new
<a href="/pkg/encoding/xml/#Decoder.Decode"><code>Decode</code></a> method. An
<a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a> type was also
introduced.
</p>
<p>
The functions <a href="/pkg/encoding/xml/#Marshal"><code>Marshal</code></a>
and <a href="/pkg/encoding/xml/#Unmarshal"><code>Unmarshal</code></a>
work with <code>[]byte</code> values now. To work with streams,
use the new <a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a>
and <a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> types.
</p>
<p>
When marshaling or unmarshaling values, the format of supported flags in
field tags has changed to be closer to the
<a href="/pkg/encoding/json"><code>json</code></a> package
(<code>`xml:"name,flag"`</code>). The matching done between field tags, field
names, and the XML attribute and element names is now case-sensitive.
The <code>XMLName</code> field tag, if present, must also match the name
of the XML element being marshaled.
</p>
<p>
<em>Updating</em>:
Running <code>go fix</code> will update most uses of the package except for some calls to
<code>Unmarshal</code>. Special care must be taken with field tags,
since the fix tool will not update them and if not fixed by hand they will
misbehave silently in some cases. For example, the old
<code>"attr"</code> is now written <code>",attr"</code> while plain
<code>"attr"</code> remains valid but with a different meaning.
</p>
<h2 id="go_command">The go command</h2>
<h2 id="releases">Packaged releases</h2>

227
doc/go1.tmpl
View File

@ -759,38 +759,23 @@ few programs beyond the need to run <code>go fix</code>.
This category includes packages that are new in Go 1.
</p>
<h3 id="bufio">The bufio package</h3>
<h3 id="crypto_aes_des">The crypto/aes and crypto/des packages</h3>
<p>
In Go 1, <a href="/pkg/bufio/#NewReaderSize"><code>bufio.NewReaderSize</code></a>
and
<a href="/pkg/bufio/#NewWriterSize"><code>bufio.NewWriterSize</code></a>
functions no longer return an error for invalid sizes.
If the argument size is too small or invalid, it is adjusted.
In Go 1, the <code>Reset</code> method has been removed. Go does not guarantee
that memory is not copied and therefore this method was misleading.
</p>
<p>
The cipher-specific types <code>*aes.Cipher</code>, <code>*des.Cipher</code>,
and <code>*des.TripleDESCipher</code> have been removed in favor of
<code>cipher.Block</code>.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
</p>
<h3 id="bufio">The compress/flate, compress/gzip and compress/zlib packages</h3>
<p>
In Go 1, the <code>NewWriterXxx</code> functions in
<a href="/pkg/compress/flate"><code>compress/flate</code></a>,
<a href="/pkg/compress/gzip"><code>compress/gzip</code></a> and
<a href="/pkg/compress/zlib"><code>compress/zlib</code></a>
all return <code>(*Writer, error)</code> if they take a compression level,
and <code>*Writer</code> otherwise. Package <code>gzip</code>'s
<code>Compressor</code> and <code>Decompressor</code> types have been renamed
to <code>Writer</code> and <code>Reader</code>. Package <code>flate</code>'s
<code>WrongValueError</code> type has been removed.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
Remove the calls to Reset. Replace uses of the specific cipher types with
cipher.Block.
</p>
<h3 id="crypto_elliptic">The crypto/elliptic package</h3>
@ -843,64 +828,6 @@ to be implemented in the future.
No changes will be needed.
</p>
<h3 id="encoding_binary">The encoding/binary package</h3>
<p>
In Go 1, the <code>binary.TotalSize</code> function has been replaced by
<a href="/pkg/encoding/binary/#Size"><code>Size</code></a>,
which takes an <code>interface{}</code> argument rather than
a <code>reflect.Value</code>.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
</p>
<h3 id="encoding_xml">The encoding/xml package</h3>
<p>
In Go 1, the <a href="/pkg/encoding/xml/"><code>xml</code></a> package
has been brought closer in design to the other marshaling packages such
as <a href="/pkg/encoding/gob/"><code>encoding/gob</code></a>.
</p>
<p>
The old <code>Parser</code> type is renamed
<a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> and has a new
<a href="/pkg/encoding/xml/#Decoder.Decode"><code>Decode</code></a> method. An
<a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a> type was also
introduced.
</p>
<p>
The functions <a href="/pkg/encoding/xml/#Marshal"><code>Marshal</code></a>
and <a href="/pkg/encoding/xml/#Unmarshal"><code>Unmarshal</code></a>
work with <code>[]byte</code> values now. To work with streams,
use the new <a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a>
and <a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> types.
</p>
<p>
When marshaling or unmarshaling values, the format of supported flags in
field tags has changed to be closer to the
<a href="/pkg/encoding/json"><code>json</code></a> package
(<code>`xml:"name,flag"`</code>). The matching done between field tags, field
names, and the XML attribute and element names is now case-sensitive.
The <code>XMLName</code> field tag, if present, must also match the name
of the XML element being marshaled.
</p>
<p>
<em>Updating</em>:
Running <code>go fix</code> will update most uses of the package except for some calls to
<code>Unmarshal</code>. Special care must be taken with field tags,
since the fix tool will not update them and if not fixed by hand they will
misbehave silently in some cases. For example, the old
<code>"attr"</code> is now written <code>",attr"</code> while plain
<code>"attr"</code> remains valid but with a different meaning.
</p>
<h3 id="expvar">The expvar package</h3>
<p>
@ -949,15 +876,6 @@ The <code>Duration</code> flag is new and affects no existing code.
Several packages under <code>go</code> have slightly revised APIs.
</p>
<p>
A concrete <code>Mode</code> type was introduced for configuration mode flags
in the packages
<a href="/pkg/go/scanner/"><code>go/scanner</code></a>,
<a href="/pkg/go/parser/"><code>go/parser</code></a>,
<a href="/pkg/go/printer/"><code>go/printer</code></a>, and
<a href="/pkg/go/doc/"><code>go/doc</code></a>.
</p>
<p>
The modes <code>AllowIllegalChars</code> and <code>InsertSemis</code> have been removed
from the <a href="/pkg/go/scanner/"><code>go/scanner</code></a> package. They were mostly
@ -966,16 +884,6 @@ useful for scanning text other then Go source files. Instead, the
for that purpose.
</p>
<p>
The <a href="/pkg/go/scanner/#ErrorHandler"><code>ErrorHandler</code></a> provided
to the scanner's <a href="/pkg/go/scanner/#Scanner.Init"><code>Init</code></a> method is
now simply a function rather than an interface. The <code>ErrorVector</code> type has
been removed in favor of the (existing) <a href="/pkg/go/scanner/#ErrorList"><code>ErrorList</code></a>
type, and the <code>ErrorVector</code> methods have been migrated. Instead of embedding
an <code>ErrorVector</code> in a client of the scanner, now a client should maintain
an <code>ErrorList</code>.
</p>
<p>
The set of parse functions provided by the <a href="/pkg/go/parser/"><code>go/parser</code></a>
package has been reduced to the primary parse function
@ -984,17 +892,6 @@ convenience functions <a href="/pkg/go/parser/#ParseDir"><code>ParseDir</code></
and <a href="/pkg/go/parser/#ParseExpr"><code>ParseExpr</code></a>.
</p>
<p>
The <a href="/pkg/go/printer/"><code>go/printer</code></a> package supports an additional
configuration mode <a href="/pkg/go/printer/#Mode"><code>SourcePos</code></a>;
if set, the printer will emit <code>//line</code> comments such that the generated
output contains the original source code position information. The new type
<a href="/pkg/go/printer/#CommentedNode"><code>CommentedNode</code></a> can be
used to provide comments associated with an arbitrary
<a href="/pkg/go/ast/#Node"><code>ast.Node</code></a> (until now only
<a href="/pkg/go/ast/#File"><code>ast.File</code></a> carried comment information).
</p>
<p>
The type names of the <a href="/pkg/go/doc/"><code>go/doc</code></a> package have been
streamlined by removing the <code>Doc</code> suffix: <code>PackageDoc</code>
@ -1092,16 +989,10 @@ The affected items are:
</ul>
<p>
The <code>Request.RawURL</code> field has been removed; it was a
Also, the <code>Request.RawURL</code> field has been removed; it was a
historical artifact.
</p>
<p>
The <code>Handle</code> and <code>HandleFunc</code>
functions, and the similarly-named methods of <code>ServeMux</code>,
now panic if an attempt is made to register the same pattern twice.
</p>
<p>
<em>Updating</em>:
Running <code>go fix</code> will update the few programs that are affected except for
@ -1138,7 +1029,9 @@ packages.
The old <code>image.ColorImage</code> type is still in the <code>image</code>
package but has been renamed
<a href="/pkg/image/#Uniform"><code>image.Uniform</code></a>,
while <code>image.Tiled</code> has been removed.
while <code>image.Tiled</code>
has been renamed
<a href="/pkg/image/#Repeated"><code>image.Repeated</code></a>.
</p>
<p>
@ -1199,6 +1092,7 @@ This table lists the renamings.
<td colspan="2"><hr></td>
</tr>
<tr><td>image.ColorImage</td> <td>image.Uniform</td></tr>
<tr><td>image.Tiled</td> <td>image.Repeated</td></tr>
</table>
<p>
@ -1223,18 +1117,6 @@ and
Running <code>go fix</code> will update almost all code affected by the change.
</p>
<h3 id="log_syslog">The log/syslog package</h3>
<p>
In Go 1, the <a href="/pkg/log/syslog/#NewLogger"><code>syslog.NewLogger</code></a>
function returns an error as well as a <code>log.Logger</code>.
</p>
<p>
<em>Updating</em>:
What little code is affected will be caught by the compiler and must be updated by hand.
</p>
<h3 id="mime">The mime package</h3>
<p>
@ -1281,27 +1163,7 @@ Code that uses the old methods will fail to compile and must be updated by hand.
The semantic change makes it difficult for the fix tool to update automatically.
</p>
<h3 id="os">The os package</h3>
<p>The <code>Time</code> function has been removed; callers should use
the <a href="/pkg/time/#Time"><code>Time</code></a> type from the
<code>time</code> package.</p>
<p>The <code>Exec</code> function has been removed; callers should use
<code>Exec</code> from the <code>syscall</code> package, where available.</p>
<p>The <code>ShellExpand</code> function has been renamed to <a
href="/pkg/os/#ExpandEnv"><code>ExpandEnv</code></a>.</p>
<p>The <a href="/pkg/os/#NewFile"><code>NewFile</code></a> function
now takes a <code>uintptr</code> fd, instead of an <code>int</code>.
The <a href="/pkg/os/#File.Fd"><code>Fd</code></a> method on files now
also returns a <code>uintptr</code>.</p>
<p><em>Updating</em>: Code will fail to compile and must be updated
by hand. </p>
<h4 id="os_fileinfo">The os.FileInfo type</h4>
<h3 id="os_fileinfo">The os.FileInfo type</h3>
<p>
Go 1 redefines the <a href="/pkg/os/#FileInfo"><code>os.FileInfo</code></a> type,
@ -1529,17 +1391,6 @@ Existing code is unaffected, although benchmarks that use <code>println</code>
or <code>panic</code> should be updated to use the new methods.
</p>
<h3 id="testing_script">The testing/script package</h3>
<p>
The testing/script package has been deleted. It was a dreg.
</p>
<p>
<em>Updating</em>:
No code is likely to be affected.
</p>
<h3 id="url">The url package</h3>
<p>
@ -1608,6 +1459,50 @@ Code that uses the old fields will fail to compile and must be updated by hand.
The semantic changes make it difficult for the fix tool to update automatically.
</p>
<h3 id="xml">The xml package</h3>
<p>
In Go 1, the <a href="/pkg/encoding/xml/"><code>xml</code></a> package
has been brought closer in design to the other marshaling packages such
as <a href="/pkg/encoding/gob/"><code>encoding/gob</code></a>.
</p>
<p>
The old <code>Parser</code> type is renamed
<a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> and has a new
<a href="/pkg/encoding/xml/#Decoder.Decode"><code>Decode</code></a> method. An
<a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a> type was also
introduced.
</p>
<p>
The functions <a href="/pkg/encoding/xml/#Marshal"><code>Marshal</code></a>
and <a href="/pkg/encoding/xml/#Unmarshal"><code>Unmarshal</code></a>
work with <code>[]byte</code> values now. To work with streams,
use the new <a href="/pkg/encoding/xml/#Encoder"><code>Encoder</code></a>
and <a href="/pkg/encoding/xml/#Decoder"><code>Decoder</code></a> types.
</p>
<p>
When marshaling or unmarshaling values, the format of supported flags in
field tags has changed to be closer to the
<a href="/pkg/encoding/json"><code>json</code></a> package
(<code>`xml:"name,flag"`</code>). The matching done between field tags, field
names, and the XML attribute and element names is now case-sensitive.
The <code>XMLName</code> field tag, if present, must also match the name
of the XML element being marshaled.
</p>
<p>
<em>Updating</em>:
Running <code>go fix</code> will update most uses of the package except for some calls to
<code>Unmarshal</code>. Special care must be taken with field tags,
since the fix tool will not update them and if not fixed by hand they will
misbehave silently in some cases. For example, the old
<code>"attr"</code> is now written <code>",attr"</code> while plain
<code>"attr"</code> remains valid but with a different meaning.
</p>
<h2 id="go_command">The go command</h2>
<h2 id="releases">Packaged releases</h2>

42
src/pkg/crypto/aes/cipher.go
View File

@ -4,13 +4,16 @@
package aes
import "strconv"
import (
"crypto/cipher"
"strconv"
)
// The AES block size in bytes.
const BlockSize = 16
// A Cipher is an instance of AES encryption using a particular key.
type Cipher struct {
// A cipher is an instance of AES encryption using a particular key.
type aesCipher struct {
enc []uint32
dec []uint32
}
@ -21,11 +24,11 @@ func (k KeySizeError) Error() string {
return "crypto/aes: invalid key size " + strconv.Itoa(int(k))
}
// NewCipher creates and returns a new Cipher.
// NewCipher creates and returns a new cipher.Block.
// The key argument should be the AES key,
// either 16, 24, or 32 bytes to select
// AES-128, AES-192, or AES-256.
func NewCipher(key []byte) (*Cipher, error) {
func NewCipher(key []byte) (cipher.Block, error) {
k := len(key)
switch k {
default:
@ -35,34 +38,13 @@ func NewCipher(key []byte) (*Cipher, error) {
}
n := k + 28
c := &Cipher{make([]uint32, n), make([]uint32, n)}
c := &aesCipher{make([]uint32, n), make([]uint32, n)}
expandKey(key, c.enc, c.dec)
return c, nil
}
// BlockSize returns the AES block size, 16 bytes.
// It is necessary to satisfy the Block interface in the
// package "crypto/cipher".
func (c *Cipher) BlockSize() int { return BlockSize }
func (c *aesCipher) BlockSize() int { return BlockSize }
// Encrypt encrypts the 16-byte buffer src using the key k
// and stores the result in dst.
// Note that for amounts of data larger than a block,
// it is not safe to just call Encrypt on successive blocks;
// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
func (c *Cipher) Encrypt(dst, src []byte) { encryptBlock(c.enc, dst, src) }
func (c *aesCipher) Encrypt(dst, src []byte) { encryptBlock(c.enc, dst, src) }
// Decrypt decrypts the 16-byte buffer src using the key k
// and stores the result in dst.
func (c *Cipher) Decrypt(dst, src []byte) { decryptBlock(c.dec, dst, src) }
// Reset zeros the key data, so that it will no longer
// appear in the process's memory.
func (c *Cipher) Reset() {
for i := 0; i < len(c.enc); i++ {
c.enc[i] = 0
}
for i := 0; i < len(c.dec); i++ {
c.dec[i] = 0
}
}
func (c *aesCipher) Decrypt(dst, src []byte) { decryptBlock(c.dec, dst, src) }

7
src/pkg/crypto/cipher/cbc_aes_test.go
View File

@ -8,11 +8,12 @@
// Special Publication 800-38A, ``Recommendation for Block Cipher
// Modes of Operation,'' 2001 Edition, pp. 24-29.
package cipher
package cipher_test
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"testing"
)
@ -72,14 +73,14 @@ func TestCBC_AES(t *testing.T) {
continue
}
encrypter := NewCBCEncrypter(c, tt.iv)
encrypter := cipher.NewCBCEncrypter(c, tt.iv)
d := make([]byte, len(tt.in))
encrypter.CryptBlocks(d, tt.in)
if !bytes.Equal(tt.out, d) {
t.Errorf("%s: CBCEncrypter\nhave %x\nwant %x", test, d, tt.out)
}
decrypter := NewCBCDecrypter(c, tt.iv)
decrypter := cipher.NewCBCDecrypter(c, tt.iv)
p := make([]byte, len(d))
decrypter.CryptBlocks(p, d)
if !bytes.Equal(tt.in, p) {

7
src/pkg/crypto/cipher/cfb_test.go
View File

@ -2,11 +2,12 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cipher
package cipher_test
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"testing"
)
@ -21,11 +22,11 @@ func TestCFB(t *testing.T) {
plaintext := []byte("this is the plaintext")
iv := make([]byte, block.BlockSize())
rand.Reader.Read(iv)
cfb := NewCFBEncrypter(block, iv)
cfb := cipher.NewCFBEncrypter(block, iv)
ciphertext := make([]byte, len(plaintext))
cfb.XORKeyStream(ciphertext, plaintext)
cfbdec := NewCFBDecrypter(block, iv)
cfbdec := cipher.NewCFBDecrypter(block, iv)
plaintextCopy := make([]byte, len(plaintext))
cfbdec.XORKeyStream(plaintextCopy, ciphertext)

2
src/pkg/crypto/cipher/common_test.go
View File

@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cipher
package cipher_test
// Common values for tests.

7
src/pkg/crypto/cipher/ctr_aes_test.go
View File

@ -8,11 +8,12 @@
// Special Publication 800-38A, ``Recommendation for Block Cipher
// Modes of Operation,'' 2001 Edition, pp. 55-58.
package cipher
package cipher_test
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"testing"
)
@ -76,7 +77,7 @@ func TestCTR_AES(t *testing.T) {
for j := 0; j <= 5; j += 5 {
in := tt.in[0 : len(tt.in)-j]
ctr := NewCTR(c, tt.iv)
ctr := cipher.NewCTR(c, tt.iv)
encrypted := make([]byte, len(in))
ctr.XORKeyStream(encrypted, in)
if out := tt.out[0:len(in)]; !bytes.Equal(out, encrypted) {
@ -86,7 +87,7 @@ func TestCTR_AES(t *testing.T) {
for j := 0; j <= 7; j += 7 {
in := tt.out[0 : len(tt.out)-j]
ctr := NewCTR(c, tt.iv)
ctr := cipher.NewCTR(c, tt.iv)
plain := make([]byte, len(in))
ctr.XORKeyStream(plain, in)
if out := tt.in[0:len(in)]; !bytes.Equal(out, plain) {

7
src/pkg/crypto/cipher/ofb_test.go
View File

@ -8,11 +8,12 @@
// Special Publication 800-38A, ``Recommendation for Block Cipher
// Modes of Operation,'' 2001 Edition, pp. 52-55.
package cipher
package cipher_test
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"testing"
)
@ -76,7 +77,7 @@ func TestOFB(t *testing.T) {
for j := 0; j <= 5; j += 5 {
plaintext := tt.in[0 : len(tt.in)-j]
ofb := NewOFB(c, tt.iv)
ofb := cipher.NewOFB(c, tt.iv)
ciphertext := make([]byte, len(plaintext))
ofb.XORKeyStream(ciphertext, plaintext)
if !bytes.Equal(ciphertext, tt.out[:len(plaintext)]) {
@ -86,7 +87,7 @@ func TestOFB(t *testing.T) {
for j := 0; j <= 5; j += 5 {
ciphertext := tt.out[0 : len(tt.in)-j]
ofb := NewOFB(c, tt.iv)
ofb := cipher.NewOFB(c, tt.iv)
plaintext := make([]byte, len(ciphertext))
ofb.XORKeyStream(plaintext, ciphertext)
if !bytes.Equal(plaintext, tt.in[:len(ciphertext)]) {

2
src/pkg/crypto/des/block.go
View File

@ -79,7 +79,7 @@ func ksRotate(in uint32) (out []uint32) {
}
// creates 16 56-bit subkeys from the original key
func (c *Cipher) generateSubkeys(keyBytes []byte) {
func (c *desCipher) generateSubkeys(keyBytes []byte) {
// apply PC1 permutation to key
key := binary.BigEndian.Uint64(keyBytes)
permutedKey := permuteBlock(key, permutedChoice1[:])

69
src/pkg/crypto/des/cipher.go
View File

@ -4,7 +4,10 @@
package des
import "strconv"
import (
"crypto/cipher"
"strconv"
)
// The DES block size in bytes.
const BlockSize = 8
@ -15,86 +18,56 @@ func (k KeySizeError) Error() string {
return "crypto/des: invalid key size " + strconv.Itoa(int(k))
}
// Cipher is an instance of DES encryption.
type Cipher struct {
// desCipher is an instance of DES encryption.
type desCipher struct {
subkeys [16]uint64
}
// NewCipher creates and returns a new Cipher.
func NewCipher(key []byte) (*Cipher, error) {
// NewCipher creates and returns a new cipher.Block.
func NewCipher(key []byte) (cipher.Block, error) {
if len(key) != 8 {
return nil, KeySizeError(len(key))
}
c := new(Cipher)
c := new(desCipher)
c.generateSubkeys(key)
return c, nil
}
// BlockSize returns the DES block size, 8 bytes.
func (c *Cipher) BlockSize() int { return BlockSize }
func (c *desCipher) BlockSize() int { return BlockSize }
// Encrypt encrypts the 8-byte buffer src and stores the result in dst.
// Note that for amounts of data larger than a block,
// it is not safe to just call Encrypt on successive blocks;
// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
func (c *Cipher) Encrypt(dst, src []byte) { encryptBlock(c.subkeys[:], dst, src) }
func (c *desCipher) Encrypt(dst, src []byte) { encryptBlock(c.subkeys[:], dst, src) }
// Decrypt decrypts the 8-byte buffer src and stores the result in dst.
func (c *Cipher) Decrypt(dst, src []byte) { decryptBlock(c.subkeys[:], dst, src) }
func (c *desCipher) Decrypt(dst, src []byte) { decryptBlock(c.subkeys[:], dst, src) }
// Reset zeros the key data, so that it will no longer
// appear in the process's memory.
func (c *Cipher) Reset() {
for i := 0; i < len(c.subkeys); i++ {
c.subkeys[i] = 0
}
// A tripleDESCipher is an instance of TripleDES encryption.
type tripleDESCipher struct {
cipher1, cipher2, cipher3 desCipher
}
// A TripleDESCipher is an instance of TripleDES encryption.
type TripleDESCipher struct {
cipher1, cipher2, cipher3 Cipher
}
// NewCipher creates and returns a new Cipher.
func NewTripleDESCipher(key []byte) (*TripleDESCipher, error) {
// NewTripleDESCipher creates and returns a new cipher.Block.
func NewTripleDESCipher(key []byte) (cipher.Block, error) {
if len(key) != 24 {
return nil, KeySizeError(len(key))
}
c := new(TripleDESCipher)
c := new(tripleDESCipher)
c.cipher1.generateSubkeys(key[:8])
c.cipher2.generateSubkeys(key[8:16])
c.cipher3.generateSubkeys(key[16:])
return c, nil
}
// BlockSize returns the TripleDES block size, 8 bytes.
// It is necessary to satisfy the Block interface in the
// package "crypto/cipher".
func (c *TripleDESCipher) BlockSize() int { return BlockSize }
func (c *tripleDESCipher) BlockSize() int { return BlockSize }
// Encrypts the 8-byte buffer src and stores the result in dst.
// Note that for amounts of data larger than a block,
// it is not safe to just call Encrypt on successive blocks;
// instead, use an encryption mode like CBC (see crypto/cipher/cbc.go).
func (c *TripleDESCipher) Encrypt(dst, src []byte) {
func (c *tripleDESCipher) Encrypt(dst, src []byte) {
c.cipher1.Encrypt(dst, src)
c.cipher2.Decrypt(dst, dst)
c.cipher3.Encrypt(dst, dst)
}
// Decrypts the 8-byte buffer src and stores the result in dst.
func (c *TripleDESCipher) Decrypt(dst, src []byte) {
func (c *tripleDESCipher) Decrypt(dst, src []byte) {
c.cipher3.Decrypt(dst, src)
c.cipher2.Encrypt(dst, dst)
c.cipher1.Decrypt(dst, dst)
}
// Reset zeros the key data, so that it will no longer
// appear in the process's memory.
func (c *TripleDESCipher) Reset() {
c.cipher1.Reset()
c.cipher2.Reset()
c.cipher3.Reset()
}

16
src/pkg/crypto/des/des_test.go
View File

@ -1260,11 +1260,19 @@ var tableA4Tests = []CryptTest{
[]byte{0x63, 0xfa, 0xc0, 0xd0, 0x34, 0xd9, 0xf7, 0x93}},
}
func newCipher(key []byte) *desCipher {
c, err := NewCipher(key)
if err != nil {
panic("NewCipher failed: " + err.Error())
}
return c.(*desCipher)
}
// Use the known weak keys to test DES implementation
func TestWeakKeys(t *testing.T) {
for i, tt := range weakKeyTests {
var encrypt = func(in []byte) (out []byte) {
c, _ := NewCipher(tt.key)
c := newCipher(tt.key)
out = make([]byte, len(in))
encryptBlock(c.subkeys[:], out, in)
return
@ -1285,7 +1293,7 @@ func TestWeakKeys(t *testing.T) {
func TestSemiWeakKeyPairs(t *testing.T) {
for i, tt := range semiWeakKeyTests {
var encrypt = func(key, in []byte) (out []byte) {
c, _ := NewCipher(key)
c := newCipher(key)
out = make([]byte, len(in))
encryptBlock(c.subkeys[:], out, in)
return
@ -1305,7 +1313,7 @@ func TestSemiWeakKeyPairs(t *testing.T) {
func TestDESEncryptBlock(t *testing.T) {
for i, tt := range encryptDESTests {
c, _ := NewCipher(tt.key)
c := newCipher(tt.key)
out := make([]byte, len(tt.in))
encryptBlock(c.subkeys[:], out, tt.in)
@ -1317,7 +1325,7 @@ func TestDESEncryptBlock(t *testing.T) {
func TestDESDecryptBlock(t *testing.T) {
for i, tt := range encryptDESTests {
c, _ := NewCipher(tt.key)
c := newCipher(tt.key)
plain := make([]byte, len(tt.in))
decryptBlock(c.subkeys[:], plain, tt.out)

8
src/pkg/crypto/dsa/dsa.go
View File

@ -29,17 +29,11 @@ type PrivateKey struct {
X *big.Int
}
type invalidPublicKeyError int
func (invalidPublicKeyError) Error() string {
return "crypto/dsa: invalid public key"
}
// ErrInvalidPublicKey results when a public key is not usable by this code.
// FIPS is quite strict about the format of DSA keys, but other code may be
// less so. Thus, when using keys which may have been generated by other code,
// this error must be handled.
var ErrInvalidPublicKey error = invalidPublicKeyError(0)
var ErrInvalidPublicKey = errors.New("crypto/dsa: invalid public key")
// ParameterSizes is a enumeration of the acceptable bit lengths of the primes
// in a set of DSA parameters. See FIPS 186-3, section 4.2.

3
src/pkg/crypto/rand/rand_unix.go
View File

@ -12,6 +12,7 @@ package rand
import (
"bufio"
"crypto/aes"
"crypto/cipher"
"io"
"os"
"sync"
@ -66,7 +67,7 @@ func newReader(entropy io.Reader) io.Reader {
type reader struct {
mu sync.Mutex
budget int // number of bytes that can be generated
cipher *aes.Cipher
cipher cipher.Block
entropy io.Reader
time, seed, dst, key [aes.BlockSize]byte
}

14
src/pkg/crypto/rsa/pkcs1v15.go
View File

@ -21,7 +21,7 @@ import (
func EncryptPKCS1v15(rand io.Reader, pub *PublicKey, msg []byte) (out []byte, err error) {
k := (pub.N.BitLen() + 7) / 8
if len(msg) > k-11 {
err = MessageTooLongError{}
err = ErrMessageTooLong
return
}
@ -47,7 +47,7 @@ func EncryptPKCS1v15(rand io.Reader, pub *PublicKey, msg []byte) (out []byte, er
func DecryptPKCS1v15(rand io.Reader, priv *PrivateKey, ciphertext []byte) (out []byte, err error) {
valid, out, err := decryptPKCS1v15(rand, priv, ciphertext)
if err == nil && valid == 0 {
err = DecryptionError{}
err = ErrDecryption
}
return
@ -69,7 +69,7 @@ func DecryptPKCS1v15(rand io.Reader, priv *PrivateKey, ciphertext []byte) (out [
func DecryptPKCS1v15SessionKey(rand io.Reader, priv *PrivateKey, ciphertext []byte, key []byte) (err error) {
k := (priv.N.BitLen() + 7) / 8
if k-(len(key)+3+8) < 0 {
err = DecryptionError{}
err = ErrDecryption
return
}
@ -86,7 +86,7 @@ func DecryptPKCS1v15SessionKey(rand io.Reader, priv *PrivateKey, ciphertext []by
func decryptPKCS1v15(rand io.Reader, priv *PrivateKey, ciphertext []byte) (valid int, msg []byte, err error) {
k := (priv.N.BitLen() + 7) / 8
if k < 11 {
err = DecryptionError{}
err = ErrDecryption
return
}
@ -170,7 +170,7 @@ func SignPKCS1v15(rand io.Reader, priv *PrivateKey, hash crypto.Hash, hashed []b
tLen := len(prefix) + hashLen
k := (priv.N.BitLen() + 7) / 8
if k < tLen+11 {
return nil, MessageTooLongError{}
return nil, ErrMessageTooLong
}
// EM = 0x00 || 0x01 || PS || 0x00 || T
@ -203,7 +203,7 @@ func VerifyPKCS1v15(pub *PublicKey, hash crypto.Hash, hashed []byte, sig []byte)
tLen := len(prefix) + hashLen
k := (pub.N.BitLen() + 7) / 8
if k < tLen+11 {
err = VerificationError{}
err = ErrVerification
return
}
@ -223,7 +223,7 @@ func VerifyPKCS1v15(pub *PublicKey, hash crypto.Hash, hashed []byte, sig []byte)
}
if ok != 1 {
return VerificationError{}
return ErrVerification
}
return nil

30
src/pkg/crypto/rsa/rsa.go
View File

@ -206,13 +206,9 @@ func mgf1XOR(out []byte, hash hash.Hash, seed []byte) {
}
}
// MessageTooLongError is returned when attempting to encrypt a message which
// is too large for the size of the public key.
type MessageTooLongError struct{}
func (MessageTooLongError) Error() string {
return "message too long for RSA public key size"
}
// ErrMessageTooLong is returned when attempting to encrypt a message which is
// too large for the size of the public key.
var ErrMessageTooLong = errors.New("crypto/rsa: message too long for RSA public key size")
func encrypt(c *big.Int, pub *PublicKey, m *big.Int) *big.Int {
e := big.NewInt(int64(pub.E))
@ -227,7 +223,7 @@ func EncryptOAEP(hash hash.Hash, random io.Reader, pub *PublicKey, msg []byte, l
hash.Reset()
k := (pub.N.BitLen() + 7) / 8
if len(msg) > k-2*hash.Size()-2 {
err = MessageTooLongError{}
err = ErrMessageTooLong
return
}
@ -266,17 +262,13 @@ func EncryptOAEP(hash hash.Hash, random io.Reader, pub *PublicKey, msg []byte, l
return
}
// A DecryptionError represents a failure to decrypt a message.
// ErrDecryption represents a failure to decrypt a message.
// It is deliberately vague to avoid adaptive attacks.
type DecryptionError struct{}
var ErrDecryption = errors.New("crypto/rsa: decryption error")
func (DecryptionError) Error() string { return "RSA decryption error" }
// A VerificationError represents a failure to verify a signature.
// ErrVerification represents a failure to verify a signature.
// It is deliberately vague to avoid adaptive attacks.
type VerificationError struct{}
func (VerificationError) Error() string { return "RSA verification error" }
var ErrVerification = errors.New("crypto/rsa: verification error")
// modInverse returns ia, the inverse of a in the multiplicative group of prime
// order n. It requires that a be a member of the group (i.e. less than n).
@ -338,7 +330,7 @@ func (priv *PrivateKey) Precompute() {
func decrypt(random io.Reader, priv *PrivateKey, c *big.Int) (m *big.Int, err error) {
// TODO(agl): can we get away with reusing blinds?
if c.Cmp(priv.N) > 0 {
err = DecryptionError{}
err = ErrDecryption
return
}
@ -417,7 +409,7 @@ func DecryptOAEP(hash hash.Hash, random io.Reader, priv *PrivateKey, ciphertext
k := (priv.N.BitLen() + 7) / 8
if len(ciphertext) > k ||
k < hash.Size()*2+2 {
err = DecryptionError{}
err = ErrDecryption
return
}
@ -473,7 +465,7 @@ func DecryptOAEP(hash hash.Hash, random io.Reader, priv *PrivateKey, ciphertext
}
if firstByteIsZero&lHash2Good&^invalid&^lookingForIndex != 1 {
err = DecryptionError{}
err = ErrDecryption
return
}

31
src/pkg/crypto/tls/conn.go
View File

@ -87,9 +87,9 @@ func (c *Conn) RemoteAddr() net.Addr {
return c.conn.RemoteAddr()
}
// SetDeadline sets the read deadline associated with the connection.
// There is no write deadline.
// A zero value for t means Read will not time out.
// SetDeadline sets the read and write deadlines associated with the connection.
// A zero value for t means Read and Write will not time out.
// After a Write has timed out, the TLS state is corrupt and all future writes will return the same error.
func (c *Conn) SetDeadline(t time.Time) error {
return c.conn.SetDeadline(t)
}
@ -100,10 +100,11 @@ func (c *Conn) SetReadDeadline(t time.Time) error {
return c.conn.SetReadDeadline(t)
}
// SetWriteDeadline exists to satisfy the net.Conn interface
// but is not implemented by TLS. It always returns an error.
// SetWriteDeadline sets the write deadline on the underlying conneciton.
// A zero value for t means Write will not time out.
// After a Write has timed out, the TLS state is corrupt and all future writes will return the same error.
func (c *Conn) SetWriteDeadline(t time.Time) error {
return errors.New("TLS does not support SetWriteDeadline")
return c.conn.SetWriteDeadline(t)
}
// A halfConn represents one direction of the record layer
@ -726,9 +727,13 @@ func (c *Conn) readHandshake() (interface{}, error) {
}
// Write writes data to the connection.
func (c *Conn) Write(b []byte) (n int, err error) {
if err = c.Handshake(); err != nil {
return
func (c *Conn) Write(b []byte) (int, error) {
if c.err != nil {
return 0, c.err
}
if c.err = c.Handshake(); c.err != nil {
return 0, c.err
}
c.out.Lock()
@ -737,10 +742,10 @@ func (c *Conn) Write(b []byte) (n int, err error) {
if !c.handshakeComplete {
return 0, alertInternalError
}
if c.err != nil {
return 0, c.err
}
return c.writeRecord(recordTypeApplicationData, b)
var n int
n, c.err = c.writeRecord(recordTypeApplicationData, b)
return n, c.err
}
// Read can be made to time out and return a net.Error with Timeout() == true

20
src/pkg/crypto/x509/x509.go
View File

@ -327,13 +327,9 @@ type Certificate struct {
PolicyIdentifiers []asn1.ObjectIdentifier
}
// UnsupportedAlgorithmError results from attempting to perform an operation
// that involves algorithms that are not currently implemented.
type UnsupportedAlgorithmError struct{}
func (UnsupportedAlgorithmError) Error() string {
return "cannot verify signature: algorithm unimplemented"
}
// ErrUnsupportedAlgorithm results from attempting to perform an operation that
// involves algorithms that are not currently implemented.
var ErrUnsupportedAlgorithm = errors.New("crypto/x509: cannot verify signature: algorithm unimplemented")
// ConstraintViolationError results when a requested usage is not permitted by
// a certificate. For example: checking a signature when the public key isn't a
@ -341,7 +337,7 @@ func (UnsupportedAlgorithmError) Error() string {
type ConstraintViolationError struct{}
func (ConstraintViolationError) Error() string {
return "invalid signature: parent certificate cannot sign this kind of certificate"
return "crypto/x509: invalid signature: parent certificate cannot sign this kind of certificate"
}
func (c *Certificate) Equal(other *Certificate) bool {
@ -366,7 +362,7 @@ func (c *Certificate) CheckSignatureFrom(parent *Certificate) (err error) {
}
if parent.PublicKeyAlgorithm == UnknownPublicKeyAlgorithm {
return UnsupportedAlgorithmError{}
return ErrUnsupportedAlgorithm
}
// TODO(agl): don't ignore the path length constraint.
@ -389,12 +385,12 @@ func (c *Certificate) CheckSignature(algo SignatureAlgorithm, signed, signature
case SHA512WithRSA:
hashType = crypto.SHA512
default:
return UnsupportedAlgorithmError{}
return ErrUnsupportedAlgorithm
}
h := hashType.New()
if h == nil {
return UnsupportedAlgorithmError{}
return ErrUnsupportedAlgorithm
}
h.Write(signed)
@ -416,7 +412,7 @@ func (c *Certificate) CheckSignature(algo SignatureAlgorithm, signed, signature
}
return
}
return UnsupportedAlgorithmError{}
return ErrUnsupportedAlgorithm
}
// CheckCRLSignature checks that the signature in crl is from c.