tlslite.utils.cryptomath module

cryptomath module

This module has basic math/crypto code.

tlslite.utils.cryptomath.HKDF_expand(PRK, info, L, algorithm)

tlslite.utils.cryptomath.HMAC_MD5(k, b)

tlslite.utils.cryptomath.HMAC_SHA1(k, b)

tlslite.utils.cryptomath.HMAC_SHA256(k, b)

tlslite.utils.cryptomath.HMAC_SHA384(k, b)

tlslite.utils.cryptomath.MD5(b)

Return a MD5 digest of data

tlslite.utils.cryptomath.SHA1(b)

Return a SHA1 digest of data

tlslite.utils.cryptomath.bytesToNumber(b, endian='big')

Convert a number stored in bytearray to an integer.

By default assumes big-endian encoding of the number.

tlslite.utils.cryptomath.divceil(divident, divisor)

Integer division with rounding up

tlslite.utils.cryptomath.gcd(a, b)

tlslite.utils.cryptomath.getRandomBytes(howMany)

tlslite.utils.cryptomath.getRandomNumber(low, high)

tlslite.utils.cryptomath.getRandomPrime(bits, display=False)

tlslite.utils.cryptomath.getRandomSafePrime(bits, display=False)

tlslite.utils.cryptomath.invMod(a, b)

tlslite.utils.cryptomath.isPrime(n, iterations=5, display=False, sieve=[2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997])

tlslite.utils.cryptomath.lcm(a, b)

tlslite.utils.cryptomath.makeSieve(n)

tlslite.utils.cryptomath.mpiToNumber(mpi)

Convert a MPI (OpenSSL bignum string) to an integer.

tlslite.utils.cryptomath.numBits(n)

Return number of bits necessary to represent the integer in binary

tlslite.utils.cryptomath.numBytes(n)

Return number of bytes necessary to represent the integer in bytes

tlslite.utils.cryptomath.numberToByteArray(n, howManyBytes=None, endian='big')

Convert an integer into a bytearray, zero-pad to howManyBytes.

The returned bytearray may be smaller than howManyBytes, but will not be larger. The returned bytearray will contain a big- or little-endian encoding of the input integer (n). Big endian encoding is used by default.

tlslite.utils.cryptomath.numberToMPI(n)

tlslite.utils.cryptomath.powMod(base, power, modulus)

tlslite.utils.cryptomath.secureHMAC(k, b, algorithm)

Return a HMAC using b and k using algorithm

tlslite.utils.cryptomath.secureHash(data, algorithm)

Return a digest of data using algorithm