Module BSV::Primitives::Digest ¶

Cryptographic hash functions and HMAC operations.

Thin wrappers around OpenSSL::Digest and OpenSSL::HMAC providing the hash algorithms used throughout the BSV protocol: SHA-1, SHA-256, double-SHA-256, SHA-512, RIPEMD-160, Hash160, HMAC, and PBKDF2.

Public Class Methods¶

hash160(data) ¶

Compute Hash160: RIPEMD-160(SHA-256(data)).

Standard Bitcoin hash used for addresses and P2PKH script matching. - @param data [String] binary data to hash - @return [String] 20-byte digest

hmac_sha256(key, data) ¶

Compute HMAC-SHA-256. - @param key [String] HMAC key - @param data [String] data to authenticate - @return [String] 32-byte MAC

hmac_sha512(key, data) ¶

Compute HMAC-SHA-512. - @param key [String] HMAC key - @param data [String] data to authenticate - @return [String] 64-byte MAC

pbkdf2_hmac_sha512(password, salt, iterations: = 2048, key_length: = 64) ¶

Derive a key using PBKDF2-HMAC-SHA-512.

Used by BIP-39 to convert mnemonic phrases into seeds. - @param password [String] the password (mnemonic phrase) - @param salt [String] the salt (+"mnemonic"+ + passphrase) - @param iterations [Integer] iteration count (default: 2048 per BIP-39) - @param key_length [Integer] desired output length in bytes (default: 64) - @return [String] derived key bytes

ripemd160(data) ¶

Compute RIPEMD-160 digest. - @param data [String] binary data to hash - @return [String] 20-byte digest

sha1(data) ¶

Compute SHA-1 digest. - @param data [String] binary data to hash - @return [String] 20-byte digest

sha256(data) ¶

Compute SHA-256 digest. - @param data [String] binary data to hash - @return [String] 32-byte digest

sha256d(data) ¶

Compute double-SHA-256 (SHA-256d) digest.

Used extensively in Bitcoin for transaction and block hashing. - @param data [String] binary data to hash - @return [String] 32-byte digest

sha512(data) ¶

Compute SHA-512 digest. - @param data [String] binary data to hash - @return [String] 64-byte digest