Module digest

SHA-2 and the legacy SHA-1 digest algorithm.

If all the data is available in a single contiguous slice then the digest function should be used. Otherwise, the digest can be calculated in multiple steps using Context.

Structs

• Algorithm
  A digest algorithm.
• Context
  A context for multi-step (Init-Update-Finish) digest calculations.
• Digest
  A calculated digest value.

Constants

• MAX_BLOCK_LEN
  The maximum block length (Algorithm::block_len) of all the algorithms in this module.
• MAX_CHAINING_LEN
  The maximum chaining length (Algorithm::chaining_len) of all the algorithms in this module.
• MAX_OUTPUT_LEN
  The maximum output length (Algorithm::output_len) of all the algorithms in this module.
• SHA1_OUTPUT_LEN
  The length of the output of SHA-1, in bytes.
• SHA256_OUTPUT_LEN
  The length of the output of SHA-256, in bytes.
• SHA384_OUTPUT_LEN
  The length of the output of SHA-384, in bytes.
• SHA512_256_OUTPUT_LEN
  The length of the output of SHA-512/256, in bytes.
• SHA512_OUTPUT_LEN
  The length of the output of SHA-512, in bytes.

Statics

• SHA1_FOR_LEGACY_USE_ONLY
  SHA-1 as specified in FIPS 180-4. Deprecated.
• SHA256
  SHA-256 as specified in FIPS 180-4.
• SHA384
  SHA-384 as specified in FIPS 180-4.
• SHA512
  SHA-512 as specified in FIPS 180-4.
• SHA512_256
  SHA-512/256 as specified in FIPS 180-4.

Functions

• digest
  Returns the digest of data using the given digest algorithm.