Struct ring::digest::Algorithm [−][src]
pub struct Algorithm { pub output_len: usize, pub chaining_len: usize, pub block_len: usize, // some fields omitted }
A digest algorithm.
C analog: EVP_MD
Fields
output_len: usize
C analog: EVP_MD_size
chaining_len: usize
The size of the chaining value of the digest function, in bytes. For
non-truncated algorithms (SHA-1, SHA-256, SHA-512), this is equal to
output_len
. For truncated algorithms (e.g. SHA-384, SHA-512/256),
this is equal to the length before truncation. This is mostly helpful
for determining the size of an HMAC key that is appropriate for the
digest algorithm.
block_len: usize
C analog: EVP_MD_block_size