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| -rw-r--r-- | lib/crypto/doc/src/algorithm_details.xml | 233 | ||||
| -rw-r--r-- | lib/crypto/doc/src/crypto.xml | 38 |
2 files changed, 185 insertions, 86 deletions
diff --git a/lib/crypto/doc/src/algorithm_details.xml b/lib/crypto/doc/src/algorithm_details.xml index 85ae766c35..71014764c8 100644 --- a/lib/crypto/doc/src/algorithm_details.xml +++ b/lib/crypto/doc/src/algorithm_details.xml @@ -37,81 +37,129 @@ <section> <title>Ciphers</title> + <p>A <seealso marker="crypto#type-cipher">cipher</seealso> in the + <seealso marker="crypto:new_api#the-new-api">new api</seealso> + is categorized as either + <seealso marker="crypto#type-cipher_no_iv">cipher_no_iv()</seealso>, + <seealso marker="crypto#type-cipher_iv">cipher_iv()</seealso> or + <seealso marker="crypto#type-cipher_aead">cipher_aead()</seealso>. + The letters IV are short for <i>Initialization Vector</i> and + AEAD is an abreviation of <i>Authenticated Encryption with Associated Data</i>. + </p> + <p>Due to irregular naming conventions, some cipher names in the old api are + substitued by new names in the new api. For a list of retired names, see + <seealso marker="crypto:new_api#retired-cipher-names">Retired cipher names</seealso>. + </p> + <p>To dynamically check availability, check that the name in the <i>Cipher and Mode</i> column is present in the + list returned by <seealso marker="crypto#supports-1">crypto:supports(ciphers)</seealso>. + </p> + <section> - <title>Block Ciphers</title> - <p>To be used in - <seealso marker="crypto#block_encrypt-3">block_encrypt/3</seealso>, - <seealso marker="crypto#block_encrypt-4">block_encrypt/4</seealso>, - <seealso marker="crypto#block_decrypt-3">block_decrypt/3</seealso> and - <seealso marker="crypto#block_decrypt-4">block_decrypt/4</seealso>. - </p> - <p>Available in all OpenSSL compatible with Erlang CRYPTO if not disabled by configuration. + <title>Ciphers without an IV - cipher_no_iv()</title> + <p>To be used with: </p> - <p>To dynamically check availability, check that the name in the <i>Cipher and Mode</i> column is present in the - list returned by <seealso marker="crypto#supports-1">crypto:supports(ciphers)</seealso>. + <list> + <item><seealso marker="crypto#crypto_one_time/4">crypto_one_time/4</seealso></item> + <item><seealso marker="crypto#crypto_init/3">crypto_init/3</seealso></item> + </list> + <p>The ciphers are: </p> <table> - <row><cell><strong>Cipher and Mode</strong></cell><cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell><cell><strong>IV length</strong><br/><strong>[bytes]</strong></cell><cell><strong>Block size</strong><br/><strong>[bytes]</strong></cell></row> - <row><cell><c>aes_cbc</c></cell> <cell>16, 24, 32</cell><cell>16</cell><cell>16</cell></row> - <row><cell><c>aes_cbc128</c></cell><cell>16</cell><cell>16</cell><cell>16</cell></row> - <row><cell><c>aes_cbc256</c></cell><cell>32</cell><cell>16</cell><cell>16</cell></row> - - <row><cell><c>aes_cfb8</c></cell> <cell>16, 24, 32</cell><cell>16</cell><cell>any</cell></row> - - <row><cell><c>aes_ecb</c></cell><cell>16, 24, 32</cell><cell> </cell><cell>16</cell></row> - - <row><cell><c>aes_ige256</c></cell><cell>16</cell><cell>32</cell><cell>16</cell></row> - <row><cell><c>blowfish_cbc</c></cell> <cell>4-56</cell> <cell>8</cell> <cell>8</cell></row> - <row><cell><c>blowfish_cfb64</c></cell> <cell>≥1</cell> <cell>8</cell> <cell>any</cell></row> - <row><cell><c>blowfish_ecb</c></cell><cell>≥1</cell><cell> </cell><cell>8</cell></row> - <row><cell><c>blowfish_ofb64</c></cell><cell>≥1</cell><cell>8</cell><cell>any</cell></row> - - <row><cell><c>des3_cbc</c><br/><i>(=DES EDE3 CBC)</i></cell><cell>[8,8,8]</cell><cell>8</cell><cell>8</cell></row> - <row><cell><c>des3_cfb</c><br/><i>(=DES EDE3 CFB)</i></cell><cell>[8,8,8]</cell><cell>8</cell><cell>any</cell></row> - - <row><cell><c>des_cbc</c></cell><cell>8</cell><cell>8</cell> <cell>8</cell></row> - <row><cell><c>des_cfb</c></cell><cell>8</cell><cell>8</cell><cell>any</cell></row> - <row><cell><c>des_ecb</c></cell><cell>8</cell><cell> </cell><cell>8</cell></row> - <row><cell><c>des_ede3</c><br/><i>(=DES EDE3 CBC)</i></cell><cell>[8,8,8]</cell><cell>8</cell><cell>8</cell></row> - <row><cell><c>rc2_cbc</c></cell><cell>≥1</cell><cell>8</cell><cell>8</cell></row> - <tcaption>Block cipher key lengths</tcaption> + <row> + <cell><strong>Cipher and Mode</strong></cell> + <cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>Block size</strong><br/><strong>[bytes]</strong></cell> + </row> + <row><cell><c>aes_128_ecb</c></cell> <cell>16</cell> <cell>16</cell></row> + <row><cell><c>aes_192_ecb</c></cell> <cell>24</cell> <cell>16</cell></row> + <row><cell><c>aes_256_ecb</c></cell> <cell>32</cell> <cell>16</cell></row> + <row><cell><c>blowfish_ecb</c></cell> <cell>16</cell> <cell> 8</cell></row> + <row><cell><c>des_ecb</c></cell> <cell> 8</cell> <cell> 8</cell></row> + <row><cell><c>rc4</c></cell> <cell>16</cell> <cell> 1</cell></row> + <tcaption>Ciphers without IV</tcaption> </table> </section> <section> - <title>AEAD Ciphers</title> - <p>To be used in <seealso marker="crypto#block_encrypt-4">block_encrypt/4</seealso> and - <seealso marker="crypto#block_decrypt-4">block_decrypt/4</seealso>. + <title>Ciphers with an IV - cipher_iv()</title> + <p>To be used with: </p> - <p>To dynamically check availability, check that the name in the <i>Cipher and Mode</i> column is present in the - list returned by <seealso marker="crypto#supports-1">crypto:supports(ciphers)</seealso>. + <list> + <item><seealso marker="crypto#crypto_one_time/5">crypto_one_time/5</seealso></item> + <item><seealso marker="crypto#crypto_init/4">crypto_init/4</seealso></item> + <item><seealso marker="crypto#crypto_dyn_iv_init/3">crypto_dyn_iv_init/3</seealso></item> + </list> + <p>The ciphers are: </p> <table> - <row><cell><strong>Cipher and Mode</strong></cell><cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell><cell><strong>IV length</strong><br/><strong>[bytes]</strong></cell><cell><strong>AAD length</strong><br/><strong>[bytes]</strong></cell><cell><strong>Tag length</strong><br/><strong>[bytes]</strong></cell><cell><strong>Block size</strong><br/><strong>[bytes]</strong></cell><cell><strong>Supported with</strong><br/><strong>OpenSSL versions</strong></cell></row> - <row><cell><c>aes_ccm</c></cell> <cell>16,24,32</cell> <cell>7-13</cell> <cell>any</cell> <cell>even 4-16<br/>default: 12</cell> <cell>any</cell><cell>≥1.1.0</cell></row> - <row><cell><c>aes_gcm</c></cell> <cell>16,24,32</cell> <cell>≥1</cell> <cell>any</cell> <cell>1-16<br/>default: 16</cell> <cell>any</cell><cell>≥1.1.0</cell></row> - <row><cell><c>chacha20_poly1305</c></cell><cell>32</cell> <cell>1-16</cell> <cell>any</cell> <cell>16</cell> <cell>any</cell><cell>≥1.1.0</cell></row> - <tcaption>AEAD cipher key lengths</tcaption> + <row> + <cell><strong>Cipher and Mode</strong></cell> + <cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>IV length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>Block size</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>Limited to</strong><br/><strong>OpenSSL versions</strong></cell> + </row> + <row><cell><c>aes_128_cbc</c></cell> <cell>16</cell> <cell>16</cell> <cell>16</cell> <cell></cell></row> + <row><cell><c>aes_192_cbc</c></cell> <cell>24</cell> <cell>16</cell> <cell>16</cell> <cell></cell></row> + <row><cell><c>aes_256_cbc</c></cell> <cell>32</cell> <cell>16</cell> <cell>16</cell> <cell></cell></row> + <row><cell><c>aes_128_cfb8</c></cell> <cell>16</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_192_cfb8</c></cell> <cell>24</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_256_cfb8</c></cell> <cell>32</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_128_cfb128</c></cell><cell>16</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_192_cfb128</c></cell><cell>24</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_256_cfb128</c></cell><cell>32</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_128_ctr</c></cell> <cell>16</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_192_ctr</c></cell> <cell>24</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_256_ctr</c></cell> <cell>32</cell> <cell>16</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>aes_ige256</c></cell> <cell>16</cell> <cell>32</cell> <cell>16</cell> <cell></cell></row> + <row><cell><c>blowfish_cbc</c></cell> <cell>16</cell> <cell> 8</cell> <cell> 8</cell> <cell></cell></row> + <row><cell><c>blowfish_cfb64</c></cell><cell>16</cell> <cell> 8</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>blowfish_ofb64</c></cell><cell>16</cell> <cell> 8</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>chacha20</c></cell> <cell>32</cell> <cell>16</cell> <cell> 1</cell> <cell>≥1.1.0d</cell></row> + <row><cell><c>des_cbc</c></cell> <cell> 8</cell> <cell> 8</cell> <cell> 8</cell> <cell></cell></row> + <row><cell><c>des_ede3_cbc</c></cell> <cell>24</cell> <cell> 8</cell> <cell> 8</cell> <cell></cell></row> + <row><cell><c>des_cfb</c></cell> <cell> 8</cell> <cell> 8</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>des_ede3_cfb</c></cell> <cell>24</cell> <cell> 8</cell> <cell> 1</cell> <cell></cell></row> + <row><cell><c>rc2_cbc</c></cell> <cell>16</cell> <cell> 8</cell> <cell> 8</cell> <cell></cell></row> + <tcaption>Ciphers with IV</tcaption> </table> </section> <section> - <title>Stream Ciphers</title> - <p>To be used in <seealso marker="crypto#stream_init-2">stream_init/2</seealso> and - <seealso marker="crypto#stream_init/3">stream_init/3</seealso>. + <title>Ciphers with AEAD - cipher_aead()</title> + <p>To be used with: </p> - <p>To dynamically check availability, check that the name in the <i>Cipher and Mode</i> column is present in the - list returned by <seealso marker="crypto#supports-1">crypto:supports(ciphers)</seealso>. + <list> + <item><seealso marker="crypto#crypto_one_time_aead/6">crypto_one_time_aead/6</seealso></item> + <item><seealso marker="crypto#crypto_one_time_aead/7">crypto_one_time_aead/7</seealso></item> + </list> + <p>The ciphers are: </p> <table> - <row><cell><strong>Cipher and Mode</strong></cell><cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell><cell><strong>IV length</strong><br/><strong>[bytes]</strong></cell><cell><strong>Supported with</strong><br/><strong>OpenSSL versions</strong></cell></row> - <row><cell><c>aes_ctr</c></cell><cell>16, 24, 32</cell><cell>16</cell><cell>≥1.0.1</cell></row> - <row><cell><c>rc4</c></cell><cell>≥1</cell><cell> </cell> <cell>all</cell></row> - <tcaption>Stream cipher key lengths</tcaption> + <row> + <cell><strong>Cipher and Mode</strong></cell> + <cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>IV length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>AAD length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>Tag length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>Block size</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>Limited to</strong><br/><strong>OpenSSL versions</strong></cell> + </row> + <row><cell><c>aes_128_ccm</c></cell> <cell>16</cell> <cell>7-13</cell> <cell>any</cell> <cell>even 4-16<br/>default: 12</cell> <cell>any</cell><cell>≥1.0.1</cell></row> + <row><cell><c>aes_192_ccm</c></cell> <cell>24</cell> <cell>7-13</cell> <cell>any</cell> <cell>even 4-16<br/>default: 12</cell> <cell>any</cell><cell>≥1.0.1</cell></row> + <row><cell><c>aes_256_ccm</c></cell> <cell>32</cell> <cell>7-13</cell> <cell>any</cell> <cell>even 4-16<br/>default: 12</cell> <cell>any</cell><cell>≥1.0.1</cell></row> + + <row><cell><c>aes_128_gcm</c></cell> <cell>16</cell> <cell>≥1</cell> <cell>any</cell> <cell>1-16<br/>default: 16</cell> <cell>any</cell><cell>≥1.0.1</cell></row> + <row><cell><c>aes_192_gcm</c></cell> <cell>24</cell> <cell>≥1</cell> <cell>any</cell> <cell>1-16<br/>default: 16</cell> <cell>any</cell><cell>≥1.0.1</cell></row> + <row><cell><c>aes_256_gcm</c></cell> <cell>32</cell> <cell>≥1</cell> <cell>any</cell> <cell>1-16<br/>default: 16</cell> <cell>any</cell><cell>≥1.0.1</cell></row> + + <row><cell><c>chacha20_poly1305</c></cell><cell>32</cell> <cell>1-16</cell> <cell>any</cell> <cell>16</cell> <cell>any</cell><cell>≥1.1.0</cell></row> + <tcaption>AEAD ciphers</tcaption> </table> </section> </section> + <section> <title>Message Authentication Codes (MACs)</title> <p>To be used in <seealso marker="crypto#mac-4">mac/4</seealso> and @@ -129,26 +177,23 @@ list returned by <seealso marker="crypto#supports-1">crypto:supports(ciphers)</seealso>. </p> <table> - <row><cell><strong>Cipher and Mode</strong></cell><cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell><cell><strong>Max Mac Length</strong><br/><strong>[bytes]</strong></cell></row> - <row><cell><c>aes_cbc</c></cell> <cell>16, 24, 32</cell><cell>16</cell></row> - <row><cell><c>aes_cbc128</c></cell><cell>16</cell><cell>16</cell></row> - <row><cell><c>aes_cbc256</c></cell><cell>32</cell><cell>16</cell></row> - - <row><cell><c>aes_cfb8</c></cell> <cell>16</cell><cell>1</cell></row> - - <row><cell><c>blowfish_cbc</c></cell> <cell>4-56</cell> <cell>8</cell></row> - <row><cell><c>blowfish_cfb64</c></cell> <cell>≥1</cell> <cell>1</cell></row> - <row><cell><c>blowfish_ecb</c></cell><cell>≥1</cell> <cell>8</cell></row> - <row><cell><c>blowfish_ofb64</c></cell><cell>≥1</cell> <cell>1</cell></row> - - <row><cell><c>des3_cbc</c><br/><i>(=DES EDE3 CBC)</i></cell><cell>[8,8,8]</cell><cell>8</cell></row> - <row><cell><c>des3_cfb</c><br/><i>(=DES EDE3 CFB)</i></cell><cell>[8,8,8]</cell><cell>1</cell></row> - - <row><cell><c>des_cbc</c></cell><cell>8</cell><cell>8</cell></row> - - <row><cell><c>des_cfb</c></cell><cell>8</cell><cell>1</cell></row> - <row><cell><c>des_ecb</c></cell><cell>8</cell><cell>1</cell></row> - <row><cell><c>rc2_cbc</c></cell><cell>≥1</cell><cell>8</cell></row> + <row> + <cell><strong>Cipher and Mode</strong></cell> + <cell><strong>Key length</strong><br/><strong>[bytes]</strong></cell> + <cell><strong>Max Mac Length</strong><br/><strong>(= default length)</strong><br/><strong>[bytes]</strong></cell> + </row> + <row><cell><c>aes_128_cbc</c></cell> <cell>16</cell> <cell>16</cell></row> + <row><cell><c>aes_192_cbc</c></cell> <cell>24</cell> <cell>16</cell></row> + <row><cell><c>aes_256_cbc</c></cell> <cell>32</cell> <cell>16</cell></row> + <row><cell><c>aes_128_ecb</c></cell> <cell>16</cell> <cell>16</cell></row> + <row><cell><c>aes_192_ecb</c></cell> <cell>24</cell> <cell>16</cell></row> + <row><cell><c>aes_256_ecb</c></cell> <cell>32</cell> <cell>16</cell></row> + <row><cell><c>blowfish_cbc</c></cell> <cell>16</cell> <cell> 8</cell></row> + <row><cell><c>blowfish_ecb</c></cell> <cell>16</cell> <cell> 8</cell></row> + <row><cell><c>des_cbc</c></cell> <cell> 8</cell> <cell> 8</cell></row> + <row><cell><c>des_ecb</c></cell> <cell> 8</cell> <cell> 8</cell></row> + <row><cell><c>des_ede3_cbc</c></cell> <cell>24</cell> <cell> 8</cell></row> + <row><cell><c>rc2_cbc</c></cell> <cell>16</cell> <cell> 8</cell></row> <tcaption>CMAC cipher key lengths</tcaption> </table> </section> @@ -158,8 +203,34 @@ <p>Available in all OpenSSL compatible with Erlang CRYPTO if not disabled by configuration. </p> <p>To dynamically check availability, check that the name <c>hmac</c> is present in the - list returned by <seealso marker="crypto#supports-1">crypto:supports(macs)</seealso>. + list returned by <seealso marker="crypto#supports-1">crypto:supports(macs)</seealso> and + that the hash name is present in the + list returned by <seealso marker="crypto#supports-1">crypto:supports(hashs)</seealso>. </p> + + <table> + <row> + <cell><strong>Hash</strong></cell> + <cell><strong>Max Mac Length</strong><br/><strong>(= default length)</strong><br/><strong>[bytes]</strong></cell> + </row> + <row><cell><c>sha</c></cell> <cell>20</cell></row> + <row><cell><c>sha224</c></cell> <cell>28</cell></row> + <row><cell><c>sha256</c></cell> <cell>32</cell></row> + <row><cell><c>sha384</c></cell> <cell>48</cell></row> + <row><cell><c>sha512</c></cell> <cell>64</cell></row> + <row><cell><c>sha3_224</c></cell> <cell>28</cell></row> + <row><cell><c>sha3_256</c></cell> <cell>32</cell></row> + <row><cell><c>sha3_384</c></cell> <cell>48</cell></row> + <row><cell><c>sha3_512</c></cell> <cell>64</cell></row> + <row><cell><c>blake2b</c></cell> <cell>64</cell></row> + <row><cell><c>blake2s</c></cell> <cell>32</cell></row> + <row><cell><c>md4</c></cell> <cell>16</cell></row> + <row><cell><c>md5</c></cell> <cell>16</cell></row> + <row><cell><c>ripemd160</c></cell> <cell>20</cell></row> + <tcaption>HMAC output sizes</tcaption> + </table> + + </section> <section> @@ -169,6 +240,8 @@ <p>To dynamically check availability, check that the name <c>poly1305</c> is present in the list returned by <seealso marker="crypto#supports-1">crypto:supports(macs)</seealso>. </p> + <p>The poly1305 mac wants an 32 bytes key and produces a 16 byte MAC by default. + </p> </section> </section> @@ -183,14 +256,14 @@ <table> <row><cell><strong>Type</strong></cell> <cell><strong>Names</strong></cell> - <cell><strong>Supported with</strong><br/><strong>OpenSSL versions</strong></cell> + <cell><strong>Limitated to</strong><br/><strong>OpenSSL versions</strong></cell> </row> - <row><cell>SHA1</cell><cell>sha</cell><cell>all</cell></row> - <row><cell>SHA2</cell><cell>sha224, sha256, sha384, sha512</cell><cell>all</cell></row> + <row><cell>SHA1</cell><cell>sha</cell><cell></cell></row> + <row><cell>SHA2</cell><cell>sha224, sha256, sha384, sha512</cell><cell></cell></row> <row><cell>SHA3</cell><cell>sha3_224, sha3_256, sha3_384, sha3_512</cell><cell>≥1.1.1</cell></row> - <row><cell>MD4</cell><cell>md4</cell><cell>all</cell></row> - <row><cell>MD5</cell><cell>md5</cell><cell>all</cell></row> - <row><cell>RIPEMD</cell><cell>ripemd160</cell><cell>all</cell></row> + <row><cell>MD4</cell><cell>md4</cell><cell></cell></row> + <row><cell>MD5</cell><cell>md5</cell><cell></cell></row> + <row><cell>RIPEMD</cell><cell>ripemd160</cell><cell></cell></row> <tcaption></tcaption> </table> </section> diff --git a/lib/crypto/doc/src/crypto.xml b/lib/crypto/doc/src/crypto.xml index 26fbfc166e..8988a18482 100644 --- a/lib/crypto/doc/src/crypto.xml +++ b/lib/crypto/doc/src/crypto.xml @@ -814,10 +814,16 @@ <p><c>SubType</c> depends on the MAC <c>Type</c>: </p> <list> - <item>For <c>hmac</c> it is a hash algorithm</item> - <item>For <c>cmac</c> it is a cipher suitable for cmac</item> + <item>For <c>hmac</c> it is a hash algorithm, see + <seealso marker="algorithm_details#hmac">Algorithm Details</seealso> in the User's Guide. + </item> + <item>For <c>cmac</c> it is a cipher suitable for cmac, see + <seealso marker="algorithm_details#cmac">Algorithm Details</seealso> in the User's Guide. + </item> <item>For <c>poly1305</c> it should be set to <c>undefined</c> or the - <seealso marker="#mac-3">mac/3</seealso> function could be used instead.</item> + <seealso marker="#mac_init-2">mac/2</seealso> function could be used instead, see + <seealso marker="algorithm_details#poly1305">Algorithm Details</seealso> in the User's Guide. + </item> </list> <p><c>Key</c> is the authentication key with a length according to the @@ -832,6 +838,9 @@ <p>The <c>Mac</c> result will have a default length depending on the <c>Type</c> and <c>SubType</c>. To set a shorter length, use <seealso marker="#macN-4">macN/4</seealso> or <seealso marker="#macN-5">macN/5</seealso> instead. + The default length is documented in + <seealso marker="algorithm_details#message-authentication-codes--macs-">Algorithm Details</seealso> + in the User's Guide. </p> </desc> </func> @@ -857,6 +866,10 @@ bytes returned from the underlying hash, the returned hash will have that shorter length instead. </p> + <p>The max <c>MacLength</c> is documented in + <seealso marker="algorithm_details#message-authentication-codes--macs-">Algorithm Details</seealso> + in the User's Guide. + </p> </desc> </func> @@ -881,10 +894,16 @@ <p><c>SubType</c> depends on the MAC <c>Type</c>: </p> <list> - <item>For <c>hmac</c> it is a hash algorithm</item> - <item>For <c>cmac</c> it is a cipher suitable for cmac</item> + <item>For <c>hmac</c> it is a hash algorithm, see + <seealso marker="algorithm_details#hmac">Algorithm Details</seealso> in the User's Guide. + </item> + <item>For <c>cmac</c> it is a cipher suitable for cmac, see + <seealso marker="algorithm_details#cmac">Algorithm Details</seealso> in the User's Guide. + </item> <item>For <c>poly1305</c> it should be set to <c>undefined</c> or the - <seealso marker="#mac_init-2">mac/2</seealso> function could be used instead.</item> + <seealso marker="#mac_init-2">mac/2</seealso> function could be used instead, see + <seealso marker="algorithm_details#poly1305">Algorithm Details</seealso> in the User's Guide. + </item> </list> <p><c>Key</c> is the authentication key with a length according to the @@ -933,6 +952,9 @@ a default length depending on the <c>Type</c> and <c>SubType</c> in the <seealso marker="#mac_init-3">mac_init/2,3</seealso> call. To set a shorter length, use <seealso marker="#mac_finalN-2">mac_finalN/2</seealso> instead. + The default length is documented in + <seealso marker="algorithm_details#message-authentication-codes--macs-">Algorithm Details</seealso> + in the User's Guide. </p> </desc> </func> @@ -948,6 +970,10 @@ bytes returned from the underlying hash, the returned hash will have that shorter length instead. </p> + <p>The max <c>MacLength</c> is documented in + <seealso marker="algorithm_details#message-authentication-codes--macs-">Algorithm Details</seealso> + in the User's Guide. + </p> </desc> </func> </funcs> |