diff options
Diffstat (limited to 'ext/digest/digest.c')
| -rw-r--r-- | ext/digest/digest.c | 64 |
1 files changed, 58 insertions, 6 deletions
diff --git a/ext/digest/digest.c b/ext/digest/digest.c index 012c0cc89d..a6d6265249 100644 --- a/ext/digest/digest.c +++ b/ext/digest/digest.c @@ -77,8 +77,8 @@ RUBY_EXTERN void Init_digest_base(void); * * Different digest algorithms (or hash functions) are available: * - * HMAC:: - * See FIPS PUB 198 The Keyed-Hash Message Authentication Code (HMAC). + * MD5:: + * See RFC 1321 The MD5 Message-Digest Algorithm * RIPEMD-160:: * As Digest::RMD160. * See http://homes.esat.kuleuven.be/~bosselae/ripemd160.html. @@ -501,6 +501,40 @@ rb_digest_class_init(VALUE self) * * This abstract class provides a common interface to message digest * implementation classes written in C. + * + * ==Write a Digest subclass in C + * Digest::Base provides a common interface to message digest + * classes written in C. These classes must provide a struct + * of type rb_digest_metadata_t: + * typedef int (*rb_digest_hash_init_func_t)(void *); + * typedef void (*rb_digest_hash_update_func_t)(void *, unsigned char *, size_t); + * typedef int (*rb_digest_hash_finish_func_t)(void *, unsigned char *); + * + * typedef struct { + * int api_version; + * size_t digest_len; + * size_t block_len; + * size_t ctx_size; + * rb_digest_hash_init_func_t init_func; + * rb_digest_hash_update_func_t update_func; + * rb_digest_hash_finish_func_t finish_func; + * } rb_digest_metadata_t; + * + * This structure must be set as an instance variable named +metadata+ + * (without the +@+ in front of the name). By example: + * static const rb_digest_metadata_t sha1 = { + * RUBY_DIGEST_API_VERSION, + * SHA1_DIGEST_LENGTH, + * SHA1_BLOCK_LENGTH, + * sizeof(SHA1_CTX), + * (rb_digest_hash_init_func_t)SHA1_Init, + * (rb_digest_hash_update_func_t)SHA1_Update, + * (rb_digest_hash_finish_func_t)SHA1_Finish, + * }; + * + * + * rb_ivar_set(cDigest_SHA1, rb_intern("metadata"), + * Data_Wrap_Struct(0, 0, 0, (void *)&sha1)); */ static rb_digest_metadata_t * @@ -596,7 +630,11 @@ rb_digest_base_copy(VALUE copy, VALUE obj) return copy; } -/* :nodoc: */ +/* + * call-seq: digest_base.reset -> digest_base + * + * Reset the digest to its initial state and return +self+. + */ static VALUE rb_digest_base_reset(VALUE self) { @@ -612,7 +650,13 @@ rb_digest_base_reset(VALUE self) return self; } -/* :nodoc: */ +/* + * call-seq: + * digest_base.update(string) -> digest_base + * digest_base << string -> digest_base + * + * Update the digest using given _string_ and return +self+. + */ static VALUE rb_digest_base_update(VALUE self, VALUE str) { @@ -651,7 +695,11 @@ rb_digest_base_finish(VALUE self) return str; } -/* :nodoc: */ +/* + * call-seq: digest_base.digest_length -> Integer + * + * Return the length of the hash value in bytes. + */ static VALUE rb_digest_base_digest_length(VALUE self) { @@ -662,7 +710,11 @@ rb_digest_base_digest_length(VALUE self) return INT2NUM(algo->digest_len); } -/* :nodoc: */ +/* + * call-seq: digest_base.block_length -> Integer + * + * Return the block length of the digest in bytes. + */ static VALUE rb_digest_base_block_length(VALUE self) { |