btctool v0.7.0 BtcTool.Crypto View Source

Some cryptographic functions used internally, but exposed for convenience.

Link to this section Summary

Functions

ecc_pubkey_coordinates(binprivkey)

Return public key coordinates in elliptic curve from a binary private key

ripemd160(seed)

Generate a hash using RIPEMD160 from a provided seed that can be any string

sha256(seed)

Generate a hash using SHA256 from a provided seed that can be any string

Link to this section Functions

ecc_pubkey_coordinates(binprivkey)

ecc_pubkey_coordinates(binary()) :: {<<_::256>>, <<_::256>>}

Return public key coordinates in elliptic curve from a binary private key.

Result will be a tuple with x and y binary coordinates like: {x, y}

Examples

iex> binprivkey = "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF" |> Base.decode16!()
iex> ecc_pubkey_coordinates(binprivkey)
{<<70, 70, 174, 80, 71, 49, 107, 66, 48, 208, 8, 108, 138, 206, 198, 135, 240, 11, 28, 217, 209, 220, 99, 79, 108, 179, 88, 172, 10, 154, 143, 255>>,
 <<254, 119, 180, 221, 10, 75, 251, 149, 133, 31, 59, 115, 85, 199, 129, 221, 96, 248, 65, 143, 200, 166, 93, 20, 144, 122, 255, 71, 201, 3, 165, 89>>}

ripemd160(seed)

ripemd160(binary()) :: <<_::160>>

Generate a hash using RIPEMD160 from a provided seed that can be any string.

Returned result will be a binary hash of 160 bits.

Examples

iex> ripemd160("any string")
<<139, 29, 138, 146, 56, 239, 32, 33, 226, 92, 115, 96, 183, 154, 46, 97, 240, 65, 200, 180>>

sha256(seed)

sha256(binary()) :: <<_::256>>

Generate a hash using SHA256 from a provided seed that can be any string.

Returned result will be a binary hash of 256 bits.

Examples

iex> sha256("any string")
<<30, 87, 164, 82, 160, 148, 114, 140, 41, 27, 196, 43, 242, 188, 126, 184, 217, 253, 136, 68, 209, 54, 157, 162, 191, 114, 133, 136, 180, 108, 78, 117>>