crypto

DATA TYPES

byte() = 0 ... 255

ioelem() = byte() | binary() | iolist()

iolist() = [ioelem()]

key_value() = integer() | binary()

rsa_public() = [key_value()] = [E, N]

Where E is the public exponent and N is public modulus.

rsa_private() = [key_value()] = [E, N, D] | [E, N, D, P1, P2, E1, E2, C]

Where E is the public exponent, N is public modulus and D is the private exponent.The longer key format contains redundant information that will make the calculation faster. P1,P2 are first and second prime factors. E1,E2 are first and second exponents. C is the CRT coefficient. Terminology is taken from RFC 3447.

dss_public() = [key_value()] = [P, Q, G, Y]

Where P, Q and G are the dss parameters and Y is the public key.

dss_private() = [key_value()] = [P, Q, G, X]

Where P, Q and G are the dss parameters and X is the private key.

dss_public() = [key_value()] =[P, Q, G, Y]

srp_public() = key_value()

Where is A or B from SRP design

srp_private() = key_value()

Where is a or b from SRP design

srp_params() = {user, [Generator::binary(), Prime::binary(), Version::atom()]} | {host, [Verifier::binary(), Generator::binary(), Prime::binary(), Version::atom()]} | {user, [DerivedKey::binary(), Prime::binary(), Generator::binary(), Version::atom() | [Scrambler:binary()]]} | {host,[Verifier::binary(), Prime::binary(), Version::atom() | [Scrambler::binary]]}

Where Verifier is v, Generator is g and Prime is N, DerivedKey is X, and Scrambler is u (optional will be genrated if not provided) from SRP design Version = '3' | '6' | '6a'

dh_public() = key_value()

dh_private() = key_value()

dh_params() = [key_value()] = [P, G]

ecdh_public() = key_value()

ecdh_private() = key_value()

ecdh_params() = ec_named_curve() | {ec_field(), Prime :: key_value(), Point :: key_value(), Order :: integer(), CoFactor :: none | integer()}

ec_field() = {prime_field, Prime :: integer()} | {characteristic_two_field, M :: integer(), Basis :: ec_basis()}

ec_basis() = {tpbasis, K :: non_neg_integer()} | {ppbasis, K1 :: non_neg_integer(), K2 :: non_neg_integer(), K3 :: non_neg_integer()} | onbasis

stream_cipher() = rc4 | aes_ctr

stream_key() = aes_key() | rc4_key()

block_key() = aes_key() | blowfish_key() | des_key()| des3_key()

aes_key() = binary() Key length is 128, 192 or 256 bits

rc4_key() = binary() Variable key length from 8 bits up to 2048 bits (usually between 40 and 256)

blowfish_key() = binary() Variable key length from 32 bits up to 448 bits

des_key() = binary() Key length is 64 bits (in CBC mod only 8 bits are used)

des3_key() = [binary(), binary(), binary()] Each key part is 64 bits (in CBC mod only 8 bits are used)