md5

nimony/lib/std/md5.nim

This module implements the MD5 message digest algorithm (RFC 1321).

.. warning:: MD5 is considered broken for cryptographic use (collisions are feasible). Use it only for checksums / non-security purposes.

It offers both the one-shot API (toMD5, getMD5, and $ on a digest) and the incremental MD5Context (md5Init / md5Update / md5Final) for hashing data that arrives in pieces.

type MD5Digest = array[0..15, uint8]
Represents an MD5 digest (128 bits / 16 bytes).

type MD5Context = object
  state: array[0..3, uint32]
  length: uint64
  buffer: array[0..63, uint8]
  bufLen: int64

func md5Init(c: var MD5Context)
Initializes (or resets) an MD5Context so it is ready to hash a fresh message.
func md5Update(c: var MD5Context; input: openArray)
Feeds input into the running digest c.
func md5Update(c: var MD5Context; input: string)
Feeds the bytes of input into the running digest c.
func md5Final(c: var MD5Context; digest: var array[0..15, uint8])
Finishes the digest computation for c and writes the 16-byte result into digest. After this call c should be re-initialized with md5Init before being reused.
func toMD5(msg: string): array[0..15, uint8]
Computes the MD5 digest of msg.
func $(d: array[0..15, uint8]): string
Converts an MD5Digest to its lowercase hexadecimal string.
func getMD5(s: string): string
Computes the MD5 digest of s and returns it as a lowercase hex string.