diff options
Diffstat (limited to 'lib/crypto')
| -rw-r--r-- | lib/crypto/doc/src/crypto.xml | 51 | ||||
| -rw-r--r-- | lib/crypto/src/crypto.erl | 33 |
2 files changed, 82 insertions, 2 deletions
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml index 36f8bc6deb..0d78dbc426 100644 --- a/lib/crypto/doc/src/crypto.xml +++ b/lib/crypto/doc/src/crypto.xml @@ -256,6 +256,57 @@ Mpint() = <![CDATA[<<ByteLen:32/integer-big, Bytes:ByteLen/binary>>]]> </desc> </func> <func> + <name>hash(Type, Data) -> Digest</name> + <fsummary></fsummary> + <type> + <v>Type = md4 | md5 | sha | sha224 | sha256 | sha384 | sha512</v> + <v>Data = iodata()</v> + <v>Digest = binary()</v> + </type> + <desc> + <p>Computes a message digest of type <c>Type</c> from <c>Data</c>.</p> + </desc> + </func> + <func> + <name>hash_init(Type) -> Context</name> + <fsummary></fsummary> + <type> + <v>Type = md4 | md5 | sha | sha224 | sha256 | sha384 | sha512</v> + </type> + <desc> + <p>Initializes the context for streaming hash operations. <c>Type</c> determines + which digest to use. The returned context should be used as argument + to <seealso marker="#hash_update/2">hash_update</seealso>.</p> + </desc> + </func> + <func> + <name>hash_update(Context, Data) -> NewContext</name> + <fsummary></fsummary> + <type> + <v>Data = iodata()</v> + </type> + <desc> + <p>Updates the digest represented by <c>Context</c> using the given <c>Data</c>. <c>Context</c> + must have been generated using <seealso marker="#hash_init/1">hash_init</seealso> + or a previous call to this function. <c>Data</c> can be any length. <c>NewContext</c> + must be passed into the next call to <c>hash_update</c> + or <seealso marker="#hash_final/1">hash_final</seealso>.</p> + </desc> + </func> + <func> + <name>hash_final(Context) -> Digest</name> + <fsummary></fsummary> + <type> + <v>Digest = binary()</v> + </type> + <desc> + <p>Finalizes the hash operation referenced by <c>Context</c> returned + from a previous call to <seealso marker="#hash_update/2">hash_update</seealso>. + The size of <c>Digest</c> is determined by the type of hash + function used to generate it.</p> + </desc> + </func> + <func> <name>md5_mac(Key, Data) -> Mac</name> <fsummary>Compute an <c>MD5 MAC</c>message authentification code</fsummary> <type> diff --git a/lib/crypto/src/crypto.erl b/lib/crypto/src/crypto.erl index a07e7a30b4..63043888b9 100644 --- a/lib/crypto/src/crypto.erl +++ b/lib/crypto/src/crypto.erl @@ -22,7 +22,7 @@ -module(crypto). -export([start/0, stop/0, info/0, info_lib/0, version/0]). --export([hash/2]). +-export([hash/2, hash_init/1, hash_update/2, hash_final/1]). -export([md4/1, md4_init/0, md4_update/2, md4_final/1]). -export([md5/1, md5_init/0, md5_update/2, md5_final/1]). -export([sha/1, sha_init/0, sha_update/2, sha_final/1]). @@ -194,11 +194,40 @@ version() -> ?CRYPTO_VSN. hash(md5, Data) -> md5(Data); hash(md4, Data) -> md4(Data); hash(sha, Data) -> sha(Data); -hash(sha1, Data) -> sha(Data); +hash(sha224, Data) -> sha224(Data); hash(sha256, Data) -> sha256(Data); hash(sha384, Data) -> sha384(Data); hash(sha512, Data) -> sha512(Data). +-spec hash_init('md5'|'md4'|'sha'|'sha224'|'sha256'|'sha384'|'sha512') -> any(). + +hash_init(md5) -> {md5, md5_init()}; +hash_init(md4) -> {md4, md4_init()}; +hash_init(sha) -> {sha, sha_init()}; +hash_init(sha224) -> {sha224, sha224_init()}; +hash_init(sha256) -> {sha256, sha256_init()}; +hash_init(sha384) -> {sha384, sha384_init()}; +hash_init(sha512) -> {sha512, sha512_init()}. + +-spec hash_update(_, iodata()) -> any(). + +hash_update({md5,Context}, Data) -> {md5, md5_update(Context,Data)}; +hash_update({md4,Context}, Data) -> {md4, md4_update(Context,Data)}; +hash_update({sha,Context}, Data) -> {sha, sha_update(Context,Data)}; +hash_update({sha224,Context}, Data) -> {sha224, sha224_update(Context,Data)}; +hash_update({sha256,Context}, Data) -> {sha256, sha256_update(Context,Data)}; +hash_update({sha384,Context}, Data) -> {sha384, sha384_update(Context,Data)}; +hash_update({sha512,Context}, Data) -> {sha512, sha512_update(Context,Data)}. + +-spec hash_final(_) -> binary(). + +hash_final({md5,Context}) -> md5_final(Context); +hash_final({md4,Context}) -> md4_final(Context); +hash_final({sha,Context}) -> sha_final(Context); +hash_final({sha224,Context}) -> sha224_final(Context); +hash_final({sha256,Context}) -> sha256_final(Context); +hash_final({sha384,Context}) -> sha384_final(Context); +hash_final({sha512,Context}) -> sha512_final(Context). %% %% MD5 |