Public key to bitmessage address

2013-10-19T17:01:59Z

Burntbrunch:

{{stub}}

This page briefly describes, how to generate a Bitmessage Address from a public key.
The variable after the list is used to refer to the step later

# Create a private and a public key for encryption and signing (resulting in 4 keys)
# Merge the public part of the signing key and the encryption key together. (encoded in uncompressed X9.62 format) (A)
# Take the SHA512 hash of A. (B)
# Take the RIPEMD160 of B. (C)
# Repeat step 1-4 until you have a result that starts with a zero (Or two zeros, if you want a short address). (D)
# Remove the zeros at the beginning of D. (E)
# Put the stream number (as a [[Protocol specification#Variable length integer|var_int]]) in front of E. (F)
# Put the address version (as a [[Protocol specification#Variable length integer|var_int]]) in front of F. (G)
# Take a double SHA512 (hash of a hash) of G and use the first four bytes as a checksum, that you append to the end. (H)
# base58 encode H. (J)
# Put "BM-" in front J. (K)

K is your full address

Note: Bitmessage's base58 encoding uses the following sequence (the same as Bitcoin's): "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz". Many existing libraries for base58 do not use this ordering.

Bitmessage Wiki - User contributions [en]

Public key to bitmessage address