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-rw-r--r--lib/crypto/doc/src/crypto.xml31
1 files changed, 23 insertions, 8 deletions
diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml
index 7712173ed8..5f19c5cce3 100644
--- a/lib/crypto/doc/src/crypto.xml
+++ b/lib/crypto/doc/src/crypto.xml
@@ -41,7 +41,7 @@
</item>
<item>
<p>Block ciphers - <url href="http://csrc.nist.gov/groups/ST/toolkit/block_ciphers.html"> </url> DES and AES in
- Block Cipher Modes - <url href="http://csrc.nist.gov/groups/ST/toolkit/BCM/index.html"> ECB, CBC, CFB, OFB and CTR </url></p>
+ Block Cipher Modes - <url href="http://csrc.nist.gov/groups/ST/toolkit/BCM/index.html"> ECB, CBC, CFB, OFB, CTR and GCM </url></p>
</item>
<item>
<p><url href="http://www.ietf.org/rfc/rfc1321.txt"> RSA encryption RFC 1321 </url> </p>
@@ -53,6 +53,12 @@
<item>
<p><url href="http://www.ietf.org/rfc/rfc2945.txt"> Secure Remote Password Protocol (SRP - RFC 2945) </url></p>
</item>
+ <item>
+ <p>gcm: Dworkin, M., "Recommendation for Block Cipher Modes of
+ Operation: Galois/Counter Mode (GCM) and GMAC",
+ National Institute of Standards and Technology SP 800-
+ 38D, November 2007.</p>
+ </item>
</list>
</description>
@@ -130,7 +136,7 @@
<p><code>block_cipher() = aes_cbc128 | aes_cfb8 | aes_cfb128 | aes_ige256 | blowfish_cbc |
blowfish_cfb64 | des_cbc | des_cfb | des3_cbc | des3_cbf
- | des_ede3 | rc2_cbc </code></p>
+ | des_ede3 | rc2_cbc | aes_gcm </code></p>
<p><code>stream_key() = aes_key() | rc4_key() </code></p>
@@ -152,7 +158,7 @@
Note that both md4 and md5 are recommended only for compatibility with existing applications.
</p>
<p><code> cipher_algorithms() = des_cbc | des_cfb | des3_cbc | des3_cbf | des_ede3 |
- blowfish_cbc | blowfish_cfb64 | aes_cbc128 | aes_cfb8 | aes_cfb128| aes_cbc256 | aes_ige256 | rc2_cbc | aes_ctr| rc4 </code> </p>
+ blowfish_cbc | blowfish_cfb64 | aes_cbc128 | aes_cfb8 | aes_cfb128| aes_cbc256 | aes_ige256 | aes_gcm | rc2_cbc | aes_ctr| rc4 </code> </p>
<p><code> public_key_algorithms() = rsa |dss | ecdsa | dh | ecdh | ec_gf2m</code>
Note that ec_gf2m is not strictly a public key algorithm, but a restriction on what curves are supported
with ecdsa and ecdh.
@@ -161,18 +167,22 @@
</section>
<funcs>
- <func>
+ <func>
<name>block_encrypt(Type, Key, Ivec, PlainText) -> CipherText</name>
- <fsummary>Encrypt <c>PlainText</c>according to <c>Type</c> block cipher</fsummary>
+ <name>block_encrypt(aes_gcm, Key, Ivec, {AAD, PlainText}) -> {CipherText, CipherTag}</name>
+ <fsummary>Encrypt <c>PlainText</c> according to <c>Type</c> block cipher</fsummary>
<type>
<v>Type = block_cipher() </v>
<v>Key = block_key() </v>
<v>PlainText = iodata() </v>
- <v>IVec = CipherText = binary()</v>
+ <v>AAD = IVec = CipherText = CipherTag = binary()</v>
</type>
<desc>
<p>Encrypt <c>PlainText</c>according to <c>Type</c> block cipher.
<c>IVec</c> is an arbitrary initializing vector.</p>
+ <p>In AEAD (Authenticated Encryption with Associated Data) mode, encrypt
+ <c>PlainText</c>according to <c>Type</c> block cipher and calculate
+ <c>CipherTag</c> that also authenticates the <c>AAD</c> (Associated Authenticated Data).</p>
<p>May throw exception <c>notsup</c> in case the chosen <c>Type</c>
is not supported by the underlying OpenSSL implementation.</p>
</desc>
@@ -180,16 +190,21 @@
<func>
<name>block_decrypt(Type, Key, Ivec, CipherText) -> PlainText</name>
- <fsummary>Decrypt <c>CipherText</c>according to <c>Type</c> block cipher</fsummary>
+ <name>block_decrypt(aes_gcm, Key, Ivec, {AAD, CipherText, CipherTag}) -> PlainText | error</name>
+ <fsummary>Decrypt <c>CipherText</c> according to <c>Type</c> block cipher</fsummary>
<type>
<v>Type = block_cipher() </v>
<v>Key = block_key() </v>
<v>PlainText = iodata() </v>
- <v>IVec = CipherText = binary()</v>
+ <v>AAD = IVec = CipherText = CipherTag = binary()</v>
</type>
<desc>
<p>Decrypt <c>CipherText</c>according to <c>Type</c> block cipher.
<c>IVec</c> is an arbitrary initializing vector.</p>
+ <p>In AEAD (Authenticated Encryption with Associated Data) mode, decrypt
+ <c>CipherText</c>according to <c>Type</c> block cipher and check the authenticity
+ the <c>PlainText</c> and <c>AAD</c> (Associated Authenticated Data) using the
+ <c>CipherTag</c>. May return <c>error</c> if the decryption or validation fail's</p>
<p>May throw exception <c>notsup</c> in case the chosen <c>Type</c>
is not supported by the underlying OpenSSL implementation.</p>
</desc>