fluree.crypto.encodings — com.fluree/crypto 0.4.0

biginteger->bytes clj/s

(biginteger->bytes bn)

(biginteger->bytes bn l)

Return bytes of java.math.BigInteger (clj) or sjcl.bn (cljs).

biginteger->hex clj/s

(biginteger->hex bn)

Hex-encode java.math.BigInteger (clj) or sjcl.bn (cljs).

bn-even? cljs

(bn-even? sjcl-bn)

Tests is an sjcl.bn (cljs) is even. Returns boolean if so.

byte->int clj/s

(byte->int the-bytes)

bytes->biginteger clj/s

(bytes->biginteger ba)

Return bytes of java.math.BigInteger (clj) or sjcl.bn (cljs).

compute-point clj/s

(compute-point y-even? x-coordinate curve)

Compute an elliptic curve point for a y-coordinate parity and x-coordinate

DER-decode clj/s

(DER-decode asn1)

Decodes a list of numbers including an optional recovery byte, following BitCoin's convention

DER-decode-ECDSA-signature clj/s

(DER-decode-ECDSA-signature ecdsa)

Formats an ECDSA signature from hex. Returns R, S and recover as hex values.

DER-encode-ECDSA-signature clj/s

(DER-encode-ECDSA-signature R S recover curve)

Create a DER encoded signature. Both R and S should be bigintegers (clj) /bignumbers (cljs). recover should also be biginteger

hex->biginteger clj/s

(hex->biginteger hex)

Return bytes of java.math.BigInteger (clj) or sjcl.bn (cljs).

modular-square-root cljs

(modular-square-root n modulus)

Compute the square root of a number modulo a prime. Number and modulus should be big numbers (bn).

pad-hex clj/s

(pad-hex hex)

Pads a hex value with a leading zero if odd.

pad-to-length clj/s

(pad-to-length s len)

Left-pads string s to length len with zeroes.

x962-decode clj/s

(x962-decode public-key curve)

Decode a X9.62 encoded public key from hex

x962-encode clj/s

(x962-encode x-coord y-coord)

(x962-encode x-coord y-coord compressed?)

Encodes x and y coords in hex to X9.62 with optional compression (default true). x coords and y coords should be supplied in hex format.