FP256BN

package
v0.0.0-...-1a1319b Latest Latest
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 Go to latest Published: Sep 27, 2020 License: Apache-2.0 Imports: 3 Imported by: 0

Documentation

Index

Constants

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const AESKEY int = 16
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const ATE_BITS int = 66
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const BAD_PARAMS int = -11
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const BAD_PIN int = -19
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const BASEBITS uint = 56
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const BFS int = int(MODBYTES)
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const BGS int = int(MODBYTES)
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const BIGBITS int = int(MODBYTES * 8)
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const BLS int = 2
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const BLS_FAIL int = -1
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const BLS_OK int = 0
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const BN int = 1
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const CHUNK int = 64 /* Set word size */
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const CURVETYPE int = WEIERSTRASS
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const CURVE_A int = 0
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const CURVE_B_I int = 3
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const CURVE_Cof_I int = 1
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const CURVE_PAIRING_TYPE int = BN
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const DNLEN int = 2 * NLEN
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const D_TYPE int = 0

Pairing Twist type

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const EDWARDS int = 1
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const EFS int = int(MODBYTES)
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const EGS int = int(MODBYTES)
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const ERROR int = -3
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const FEXCESS int32 = ((int32(1) << 24) - 1)
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const FP_DENSE int = 4
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const FP_ONE int = 1
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const FP_SPARSE int = 3
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const FP_SPARSER int = 2
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const FP_ZERO int = 0

Sparsity

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const GENERALISED_MERSENNE int = 3
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const HASH_TYPE int = 32
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const HBITS uint = (BASEBITS / 2)
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const INVALID int = -4
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const INVALID_POINT int = -14
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const INVALID_PUBLIC_KEY int = -2
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const MAXPIN int32 = 10000 /* PIN less than this */
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const MFS int = int(MODBYTES)
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const MGS int = int(MODBYTES)
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const MOD8 uint = 3 /* Modulus mod 8 */
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const MODBITS uint = 256 /* Number of bits in Modulus */

Modulus details

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const MODBYTES uint = 32

BIG length in bytes and number base

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const MODTYPE int = NOT_SPECIAL //NOT_SPECIAL
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const MONTGOMERY int = 2
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const MONTGOMERY_FRIENDLY int = 2
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const M_TYPE int = 1
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const NEGATIVEX int = 1
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const NEXCESS int = (1 << (uint(CHUNK) - BASEBITS - 1))
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const NLEN int = int((1 + ((8*MODBYTES - 1) / BASEBITS)))

BIG lengths and Masks

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const NOT int = 0

Pairing Friendly?

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const NOT_SPECIAL int = 0

Modulus types

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const PBLEN int32 = 14 /* Number of bits in PIN */
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const POSITIVEX int = 0

Pairing x parameter sign

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const PSEUDO_MERSENNE int = 1
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const SEXTIC_TWIST int = M_TYPE
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const SIGN_OF_X int = NEGATIVEX
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const TBITS uint = MODBITS % BASEBITS // Number of active bits in top word
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const TRAP int = 200 /* 200 for 4 digit PIN, 2000 for 6-digit PIN  - approx 2*sqrt(MAXPIN) */
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const TS int = 10 /* 10 for 4 digit PIN, 14 for 6-digit PIN - 2^TS/TS approx = sqrt(MAXPIN) */
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const USE_GLV bool = true
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const USE_GS_G2 bool = true
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const USE_GS_GT bool = true
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const WEIERSTRASS int = 0

Curve types

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const WRONG_ORDER int = -18

Variables

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var CURVE_B = [...]Chunk{0x3, 0x0, 0x0, 0x0, 0x0}
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var CURVE_BB = [4][4][5]Chunk{{{0xAA5DACA05AA80D, 0x65FB1299921A8D, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}, {0xAA5DACA05AA80C, 0x65FB1299921A8D, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}, {0xAA5DACA05AA80C, 0x65FB1299921A8D, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}, {0x5EB8061615002, 0xD1, 0x0, 0x0, 0x0}}, {{0x5EB8061615001, 0xD1, 0x0, 0x0, 0x0}, {0xAA5DACA05AA80C, 0x65FB1299921A8D, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}, {0xAA5DACA05AA80D, 0x65FB1299921A8D, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}, {0xAA5DACA05AA80C, 0x65FB1299921A8D, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}}, {{0x5EB8061615002, 0xD1, 0x0, 0x0, 0x0}, {0x5EB8061615001, 0xD1, 0x0, 0x0, 0x0}, {0x5EB8061615001, 0xD1, 0x0, 0x0, 0x0}, {0x5EB8061615001, 0xD1, 0x0, 0x0, 0x0}}, {{0x82F5C030B0A802, 0x68, 0x0, 0x0, 0x0}, {0xBD700C2C2A002, 0x1A2, 0x0, 0x0, 0x0}, {0x2767EC6FAA000A, 0x65FB1299921A25, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}, {0x82F5C030B0A802, 0x68, 0x0, 0x0, 0x0}}}
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var CURVE_Bnx = [...]Chunk{0x82F5C030B0A801, 0x68, 0x0, 0x0, 0x0}
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var CURVE_Cof = [...]Chunk{0x1, 0x0, 0x0, 0x0, 0x0}
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var CURVE_Cru = [...]Chunk{0x1C0A24A3A1B807, 0xD79DF1932D1EDB, 0x40921018659BCD, 0x13988E1, 0x0}
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var CURVE_Gx = [...]Chunk{0x1, 0x0, 0x0, 0x0, 0x0}
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var CURVE_Gy = [...]Chunk{0x2, 0x0, 0x0, 0x0, 0x0}
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var CURVE_Order = [...]Chunk{0x2D536CD10B500D, 0x65FB1299921AF6, 0x5EEE71A49E0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}
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var CURVE_Pxa = [...]Chunk{0x2616B689C09EFB, 0x539A12BF843CD2, 0x577C28913ACE1C, 0xB4C96C2028560F, 0xFE0C3350}
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var CURVE_Pxb = [...]Chunk{0x69ED34A37E6A2B, 0x78E287D03589D2, 0xC637D813B924DD, 0x738AC054DB5AE1, 0x4EA66057}
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var CURVE_Pya = [...]Chunk{0x9B481BEDC27FF, 0x24758D615848E9, 0x75124E3E51EFCB, 0xC542A3B376770D, 0x702046E7}
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var CURVE_Pyb = [...]Chunk{0x1281114AAD049B, 0xBE80821A98B3E0, 0x49297EB29F8B4C, 0xD388C29042EEA6, 0x554E3BC}
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var CURVE_SB = [2][2][5]Chunk{{{0xF5EEEE7C669004, 0xFFFFFFFE78670B, 0xFFFF, 0x0, 0x0}, {0x5EB8061615001, 0xD1, 0x0, 0x0, 0x0}}, {{0x5EB8061615001, 0xD1, 0x0, 0x0, 0x0}, {0x3D4FFEB606100A, 0x65FB129B19B4BB, 0x5EEE71A49D0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}}}
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var CURVE_W = [2][5]Chunk{{0xF0036E1B054003, 0xFFFFFFFE78663A, 0xFFFF, 0x0, 0x0}, {0x5EB8061615001, 0xD1, 0x0, 0x0, 0x0}}
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var CURVE_WB = [4][5]Chunk{{0x20678F0D30A800, 0x55555554D2CC10, 0x5555, 0x0, 0x0}, {0xD6764C0D7DC805, 0x8FBEA10BC3AD1A, 0x806160104467DE, 0xD105EB, 0x0}, {0xACB6061F173803, 0x47DF5085E1D6C1, 0xC030B0082233EF, 0x6882F5, 0x0}, {0x26530F6E91F801, 0x55555554D2CCE1, 0x5555, 0x0, 0x0}}
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var Fra = [...]Chunk{0x760328AF943106, 0x71511E3AB28F74, 0x8DDB0867CF39A1, 0xCA786F352D1A6E, 0x3D617662}
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var Frb = [...]Chunk{0xB32AB2FF3EFF0D, 0xF4A9F45D57F35E, 0xD113693CCFD33A, 0x3584819819CB83, 0xC29E899D}
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var Modulus = [...]Chunk{0x292DDBAED33013, 0x65FB12980A82D3, 0x5EEE71A49F0CDC, 0xFFFCF0CD46E5F2, 0xFFFFFFFF}

Base Bits= 56

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var R2modp = [...]Chunk{0xEDE336303B9F8B, 0x92FFEE9FEC54E8, 0x13C1C063C55F79, 0xA12F2EAC0123FA, 0x8E559B2A}

Functions

func AES_CBC_IV0_DECRYPT 

func AES_CBC_IV0_DECRYPT(K []byte, C []byte) []byte

returns plaintext if all consistent, else returns null string

func AES_CBC_IV0_ENCRYPT 

func AES_CBC_IV0_ENCRYPT(K []byte, M []byte) []byte

AES encryption/decryption. Encrypt byte array M using key K and returns ciphertext

func Comp 

func Comp(a *BIG, b *BIG) int

Compare a and b, return 0 if a==b, -1 if a<b, +1 if a>b. Inputs must be normalised

func ECDH_ECIES_DECRYPT 

func ECDH_ECIES_DECRYPT(sha int, P1 []byte, P2 []byte, V []byte, C []byte, T []byte, U []byte) []byte

IEEE1363 ECIES decryption. Decryption of ciphertext V,C,T using private key U outputs plaintext M

func ECDH_ECIES_ENCRYPT 

func ECDH_ECIES_ENCRYPT(sha int, P1 []byte, P2 []byte, RNG *amcl.RAND, W []byte, M []byte, V []byte, T []byte) []byte

IEEE1363 ECIES encryption. Encryption of plaintext M uses public key W and produces ciphertext V,C,T

func ECDH_ECPSP_DSA 

func ECDH_ECPSP_DSA(sha int, RNG *amcl.RAND, S []byte, F []byte, C []byte, D []byte) int

IEEE ECDSA Signature, C and D are signature on F using private key S

func ECDH_ECPSVDP_DH 

func ECDH_ECPSVDP_DH(S []byte, WD []byte, Z []byte) int

IEEE-1363 Diffie-Hellman online calculation Z=S.WD

func ECDH_ECPVP_DSA 

func ECDH_ECPVP_DSA(sha int, W []byte, F []byte, C []byte, D []byte) int

IEEE1363 ECDSA Signature Verification. Signature C and D on F is verified using public key W

func ECDH_KDF1 

func ECDH_KDF1(sha int, Z []byte, olen int) []byte

Key Derivation Functions Input octet Z Output key of length olen

func ECDH_KDF2 

func ECDH_KDF2(sha int, Z []byte, P []byte, olen int) []byte

func ECDH_KEY_PAIR_GENERATE 

func ECDH_KEY_PAIR_GENERATE(RNG *amcl.RAND, S []byte, W []byte) int

Calculate a public/private EC GF(p) key pair W,S where W=S.G mod EC(p), * where S is the secret key and W is the public key * and G is fixed generator. * If RNG is NULL then the private key is provided externally in S * otherwise it is generated randomly internally

func ECDH_PBKDF2 

func ECDH_PBKDF2(sha int, Pass []byte, Salt []byte, rep int, olen int) []byte

Password based Key Derivation Function Input password p, salt s, and repeat count Output key of length olen

func ECDH_PUBLIC_KEY_VALIDATE 

func ECDH_PUBLIC_KEY_VALIDATE(W []byte) int

validate public key

func HMAC 

func HMAC(sha int, M []byte, K []byte, tag []byte) int

Calculate HMAC of m using key k. HMAC is tag of length olen (which is length of tag)

func KeyPairGenerate 

func KeyPairGenerate(rng *amcl.RAND, S []byte, W []byte) int

func MPIN_CLIENT 

func MPIN_CLIENT(sha int, date int, CLIENT_ID []byte, RNG *amcl.RAND, X []byte, pin int, TOKEN []byte, SEC []byte, xID []byte, xCID []byte, PERMIT []byte, TimeValue int, Y []byte) int

One pass MPIN Client

func MPIN_CLIENT_1 

func MPIN_CLIENT_1(sha int, date int, CLIENT_ID []byte, rng *amcl.RAND, X []byte, pin int, TOKEN []byte, SEC []byte, xID []byte, xCID []byte, PERMIT []byte) int

Implement step 1 on client side of MPin protocol

func MPIN_CLIENT_2 

func MPIN_CLIENT_2(X []byte, Y []byte, SEC []byte) int

Implement step 2 on client side of MPin protocol

func MPIN_CLIENT_KEY 

func MPIN_CLIENT_KEY(sha int, G1 []byte, G2 []byte, pin int, R []byte, X []byte, H []byte, wCID []byte, CK []byte) int

calculate common key on client side wCID = w.(A+AT)

func MPIN_DECODING 

func MPIN_DECODING(D []byte) int

func MPIN_ENCODING 

func MPIN_ENCODING(rng *amcl.RAND, E []byte) int

these next two functions implement elligator squared - http://eprint.iacr.org/2014/043 Elliptic curve point E in format (0x04,x,y} is converted to form {0x0-,u,v} Note that u and v are indistinguisible from random strings

func MPIN_EXTRACT_FACTOR 

func MPIN_EXTRACT_FACTOR(sha int, CID []byte, factor int32, facbits int32, TOKEN []byte) int

Extract factor from TOKEN for identity CID

func MPIN_EXTRACT_PIN 

func MPIN_EXTRACT_PIN(sha int, CID []byte, pin int, TOKEN []byte) int

func MPIN_GET_CLIENT_PERMIT 

func MPIN_GET_CLIENT_PERMIT(sha, date int, S []byte, CID []byte, CTT []byte) int

Time Permit CTT=S*(date|H(CID)) where S is master secret

func MPIN_GET_CLIENT_SECRET 

func MPIN_GET_CLIENT_SECRET(S []byte, CID []byte, CST []byte) int

Client secret CST=S*H(CID) where CID is client ID and S is master secret CID is hashed externally

func MPIN_GET_G1_MULTIPLE 

func MPIN_GET_G1_MULTIPLE(rng *amcl.RAND, typ int, X []byte, G []byte, W []byte) int

W=x*H(G); if RNG == NULL then X is passed in if RNG != NULL the X is passed out if type=0 W=x*G where G is point on the curve, else W=x*M(G), where M(G) is mapping of octet G to point on the curve

func MPIN_GET_SERVER_SECRET 

func MPIN_GET_SERVER_SECRET(S []byte, SST []byte) int

Extract Server Secret SST=S*Q where Q is fixed generator in G2 and S is master secret

func MPIN_GET_TIME 

func MPIN_GET_TIME() int

return time since epoch

func MPIN_GET_Y 

func MPIN_GET_Y(sha int, TimeValue int, xCID []byte, Y []byte)

Generate Y = H(epoch, xCID/xID)

func MPIN_HASH_ALL 

func MPIN_HASH_ALL(sha int, HID []byte, xID []byte, xCID []byte, SEC []byte, Y []byte, R []byte, W []byte) []byte

func MPIN_HASH_ID 

func MPIN_HASH_ID(sha int, ID []byte) []byte

func MPIN_KANGAROO 

func MPIN_KANGAROO(E []byte, F []byte) int

Pollards kangaroos used to return PIN error

func MPIN_PRECOMPUTE 

func MPIN_PRECOMPUTE(TOKEN []byte, CID []byte, G1 []byte, G2 []byte) int

func MPIN_RANDOM_GENERATE 

func MPIN_RANDOM_GENERATE(rng *amcl.RAND, S []byte) int

create random secret S

func MPIN_RECOMBINE_G1 

func MPIN_RECOMBINE_G1(R1 []byte, R2 []byte, R []byte) int

R=R1+R2 in group G1

func MPIN_RECOMBINE_G2 

func MPIN_RECOMBINE_G2(W1 []byte, W2 []byte, W []byte) int

W=W1+W2 in group G2

func MPIN_RESTORE_FACTOR 

func MPIN_RESTORE_FACTOR(sha int, CID []byte, factor int32, facbits int32, TOKEN []byte) int

Restore factor to TOKEN for identity CID

func MPIN_SERVER 

func MPIN_SERVER(sha int, date int, HID []byte, HTID []byte, Y []byte, SST []byte, xID []byte, xCID []byte, SEC []byte, E []byte, F []byte, CID []byte, TimeValue int) int

One pass MPIN Server

func MPIN_SERVER_1 

func MPIN_SERVER_1(sha int, date int, CID []byte, HID []byte, HTID []byte)

Outputs H(CID) and H(T|H(CID)) for time permits. If no time permits set HID=HTID

func MPIN_SERVER_2 

func MPIN_SERVER_2(date int, HID []byte, HTID []byte, Y []byte, SST []byte, xID []byte, xCID []byte, mSEC []byte, E []byte, F []byte) int

Implement step 2 of MPin protocol on server side

func MPIN_SERVER_KEY 

func MPIN_SERVER_KEY(sha int, Z []byte, SST []byte, W []byte, H []byte, HID []byte, xID []byte, xCID []byte, SK []byte) int

func Sign 

func Sign(SIG []byte, m string, S []byte) int

func Today 

func Today() int

return time in slots since epoch

func Verify 

func Verify(SIG []byte, m string, W []byte) int

Types

type BIG 

type BIG struct {
	// contains filtered or unexported fields
}

func FromBytes 

func FromBytes(b []byte) *BIG

func Modmul 

func Modmul(a1, b1, m *BIG) *BIG

return a*b mod m

func Modneg 

func Modneg(a1, m *BIG) *BIG

return -a mod m

func Modsqr 

func Modsqr(a1, m *BIG) *BIG

return a^2 mod m

func NewBIG 

func NewBIG() *BIG

func NewBIGcopy 

func NewBIGcopy(x *BIG) *BIG

func NewBIGdcopy 

func NewBIGdcopy(x *DBIG) *BIG

func NewBIGint 

func NewBIGint(x int) *BIG

func NewBIGints 

func NewBIGints(x [NLEN]Chunk) *BIG

func Randomnum 

func Randomnum(q *BIG, rng *amcl.RAND) *BIG

Create random BIG in portable way, one bit at a time

func (*BIG) Invmodp 

func (r *BIG) Invmodp(p *BIG)

this=1/this mod p. Binary method

func (*BIG) Jacobi 

func (r *BIG) Jacobi(p *BIG) int

Jacobi Symbol (this/p). Returns 0, 1 or -1

func (*BIG) Minus 

func (r *BIG) Minus(x *BIG) *BIG

return this-x

func (*BIG) Mod 

func (r *BIG) Mod(m1 *BIG)

reduce this mod m

func (*BIG) Plus 

func (r *BIG) Plus(x *BIG) *BIG

return this+x

func (*BIG) Powmod 

func (r *BIG) Powmod(e1 *BIG, m *BIG) *BIG

return this^e mod m

func (*BIG) ToBytes 

func (r *BIG) ToBytes(b []byte)

func (*BIG) ToString 

func (r *BIG) ToString() string

Convert to Hex String

type Chunk 

type Chunk int64
const BMASK Chunk = ((Chunk(1) << BASEBITS) - 1)
const HMASK Chunk = ((Chunk(1) << HBITS) - 1)
const MConst Chunk = 0x6C964E0537E5E5
const OMASK Chunk = ((Chunk(-1)) << (MODBITS % BASEBITS))

Modulus Masks 

const TMASK Chunk = (Chunk(1) << TBITS) - 1

type DBIG 

type DBIG struct {
	// contains filtered or unexported fields
}

func NewDBIG 

func NewDBIG() *DBIG

func NewDBIGcopy 

func NewDBIGcopy(x *DBIG) *DBIG

func NewDBIGscopy 

func NewDBIGscopy(x *BIG) *DBIG

type ECP 

type ECP struct {
	// contains filtered or unexported fields
}

func Bls_hash 

func Bls_hash(m string) *ECP

func ECP_fromBytes 

func ECP_fromBytes(b []byte) *ECP

convert from byte array to point

func ECP_generator 

func ECP_generator() *ECP

func ECP_mapit 

func ECP_mapit(h []byte) *ECP

func G1mul 

func G1mul(P *ECP, e *BIG) *ECP

Multiply P by e in group G1

func NewECP 

func NewECP() *ECP

Constructors

func NewECPbig 

func NewECPbig(ix *BIG) *ECP

set from x - calculate y from curve equation

func NewECPbigint 

func NewECPbigint(ix *BIG, s int) *ECP

set (x,y) from BIG and a bit

func NewECPbigs 

func NewECPbigs(ix *BIG, iy *BIG) *ECP

set (x,y) from two BIGs

func (*ECP) Add 

func (E *ECP) Add(Q *ECP)

this+=Q

func (*ECP) Affine 

func (E *ECP) Affine()

set to affine - from (x,y,z) to (x,y)

func (*ECP) Copy 

func (E *ECP) Copy(P *ECP)

this=P

func (*ECP) Equals 

func (E *ECP) Equals(Q *ECP) bool

Test P == Q

func (*ECP) GetS 

func (E *ECP) GetS() int

get sign of Y

func (*ECP) GetX 

func (E *ECP) GetX() *BIG

extract x as a BIG

func (*ECP) GetY 

func (E *ECP) GetY() *BIG

extract y as a BIG

func (*ECP) Is_infinity 

func (E *ECP) Is_infinity() bool

test for O point-at-infinity

func (*ECP) Mul 

func (E *ECP) Mul(e *BIG) *ECP

Public version

func (*ECP) Mul2 

func (E *ECP) Mul2(e *BIG, Q *ECP, f *BIG) *ECP

func (*ECP) Sub 

func (E *ECP) Sub(Q *ECP)

this-=Q

func (*ECP) ToBytes 

func (E *ECP) ToBytes(b []byte, compress bool)

convert to byte array

func (*ECP) ToString 

func (E *ECP) ToString() string

convert to hex string

type ECP2 

type ECP2 struct {
	// contains filtered or unexported fields
}

func ECP2_fromBytes 

func ECP2_fromBytes(b []byte) *ECP2

convert from byte array to point

func ECP2_generator 

func ECP2_generator() *ECP2

func ECP2_mapit 

func ECP2_mapit(h []byte) *ECP2

needed for SOK

func G2mul 

func G2mul(P *ECP2, e *BIG) *ECP2

Multiply P by e in group G2

func NewECP2 

func NewECP2() *ECP2

func NewECP2fp2 

func NewECP2fp2(ix *FP2) *ECP2

construct this from x - but set to O if not on curve

func NewECP2fp2s 

func NewECP2fp2s(ix *FP2, iy *FP2) *ECP2

construct this from (x,y) - but set to O if not on curve

func (*ECP2) Add 

func (E *ECP2) Add(Q *ECP2) int

this+=Q - return 0 for add, 1 for double, -1 for O

func (*ECP2) Affine 

func (E *ECP2) Affine()

set to Affine - (x,y,z) to (x,y)

func (*ECP2) Copy 

func (E *ECP2) Copy(P *ECP2)

copy this=P

func (*ECP2) Equals 

func (E *ECP2) Equals(Q *ECP2) bool

Test if P == Q

func (*ECP2) GetX 

func (E *ECP2) GetX() *FP2

extract affine x as FP2

func (*ECP2) GetY 

func (E *ECP2) GetY() *FP2

extract affine y as FP2

func (*ECP2) Is_infinity 

func (E *ECP2) Is_infinity() bool

Test this=O?

func (*ECP2) Mul 

func (E *ECP2) Mul(e *BIG) *ECP2

Public version

func (*ECP2) Sub 

func (E *ECP2) Sub(Q *ECP2) int

set this-=Q

func (*ECP2) ToBytes 

func (E *ECP2) ToBytes(b []byte)

convert to byte array

func (*ECP2) ToString 

func (E *ECP2) ToString() string

convert this to hex string

type FP 

type FP struct {
	XES int32
	// contains filtered or unexported fields
}

func NewFP 

func NewFP() *FP

Constructors

func NewFPbig 

func NewFPbig(a *BIG) *FP

func NewFPcopy 

func NewFPcopy(a *FP) *FP

func NewFPint 

func NewFPint(a int) *FP

func RHS 

func RHS(x *FP) *FP

Calculate RHS of curve equation

func (*FP) Equals 

func (F *FP) Equals(a *FP) bool

return TRUE if this==a

type FP12 

type FP12 struct {
	// contains filtered or unexported fields
}

func Ate 

func Ate(P1 *ECP2, Q1 *ECP) *FP12

Optimal R-ate pairing

func Ate2 

func Ate2(P1 *ECP2, Q1 *ECP, R1 *ECP2, S1 *ECP) *FP12

Optimal R-ate double pairing e(P,Q).e(R,S)

func FP12_fromBytes 

func FP12_fromBytes(w []byte) *FP12

convert from byte array to FP12

func Fexp 

func Fexp(m *FP12) *FP12

final exponentiation - keep separate for multi-pairings and to avoid thrashing stack

func GTpow 

func GTpow(d *FP12, e *BIG) *FP12

f=f^e Note that this method requires a lot of RAM! Better to use compressed XTR method, see FP4.java

func NewFP12 

func NewFP12() *FP12

Constructors

func NewFP12copy 

func NewFP12copy(x *FP12) *FP12

func NewFP12fp4 

func NewFP12fp4(d *FP4) *FP12

func NewFP12fp4s 

func NewFP12fp4s(d *FP4, e *FP4, f *FP4) *FP12

func NewFP12int 

func NewFP12int(d int) *FP12

func (*FP12) Compow 

func (F *FP12) Compow(e *BIG, r *BIG) *FP4

Fast compressed FP4 power of unitary FP12

func (*FP12) Copy 

func (F *FP12) Copy(x *FP12)

copy this=x

func (*FP12) Equals 

func (F *FP12) Equals(x *FP12) bool

return 1 if x==y, else 0

func (*FP12) Inverse 

func (F *FP12) Inverse()

this=1/this

func (*FP12) Isunity 

func (F *FP12) Isunity() bool

test x==1 ?

func (*FP12) Mul 

func (F *FP12) Mul(y *FP12)

FP12 full multiplication this=this*y

func (*FP12) Pow 

func (F *FP12) Pow(e *BIG) *FP12

this=this^e

func (*FP12) ToBytes 

func (F *FP12) ToBytes(w []byte)

convert this to byte array

func (*FP12) ToString 

func (F *FP12) ToString() string

convert to hex string

type FP2 

type FP2 struct {
	// contains filtered or unexported fields
}

func NewFP2 

func NewFP2() *FP2

Constructors

func NewFP2big 

func NewFP2big(c *BIG) *FP2

func NewFP2bigs 

func NewFP2bigs(c *BIG, d *BIG) *FP2

func NewFP2copy 

func NewFP2copy(x *FP2) *FP2

func NewFP2fp 

func NewFP2fp(c *FP) *FP2

func NewFP2fps 

func NewFP2fps(c *FP, d *FP) *FP2

func NewFP2int 

func NewFP2int(a int) *FP2

func RHS2 

func RHS2(x *FP2) *FP2

Calculate RHS of twisted curve equation x^3+B/i

func (*FP2) Equals 

func (F *FP2) Equals(x *FP2) bool

test this=x

func (*FP2) GetA 

func (F *FP2) GetA() *BIG

extract a

func (*FP2) GetB 

func (F *FP2) GetB() *BIG

extract b

type FP4 

type FP4 struct {
	// contains filtered or unexported fields
}

func NewFP4 

func NewFP4() *FP4

Constructors

func NewFP4copy 

func NewFP4copy(x *FP4) *FP4

func NewFP4fp2 

func NewFP4fp2(c *FP2) *FP4

func NewFP4fp2s 

func NewFP4fp2s(c *FP2, d *FP2) *FP4

func NewFP4int 

func NewFP4int(a int) *FP4

func (*FP4) Equals 

func (F *FP4) Equals(x *FP4) bool

test this=x?

Source Files

View all Source files

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