- ext
- ssl
- ssl.pl
- crypto.pl -- Cryptography and authentication library
- crypto_n_random_bytes/2
- crypto_data_hash/3
- crypto_file_hash/3
- crypto_context_new/2
- crypto_data_context/3
- crypto_context_hash/2
- crypto_open_hash_stream/3
- crypto_stream_hash/2
- crypto_password_hash/2
- crypto_password_hash/3
- crypto_data_hkdf/4
- ecdsa_sign/4
- ecdsa_verify/4
- hex_bytes/2
- rsa_private_decrypt/4
- rsa_private_encrypt/4
- rsa_public_decrypt/4
- rsa_public_encrypt/4
- rsa_sign/4
- rsa_verify/4
- crypto_data_decrypt/6
- crypto_data_encrypt/6
- crypto_modular_inverse/3
- crypto_generate_prime/3
- crypto_is_prime/2
- crypto_name_curve/2
- crypto_curve_order/2
- crypto_curve_generator/2
- crypto_curve_scalar_mult/4
- xmldsig.pl -- XML Digital signature
- xmlenc.pl -- XML encryption library
- ssl
- crypto_data_hkdf(+Data, +Length, -Bytes, +Options) is det
- Concentrate possibly dispersed entropy of Data and then expand it to
the desired length. Bytes is unified with a list of bytes of
length Length, and is suitable as input keying material and
initialization vectors to the symmetric encryption predicates.
Admissible options are:
- algorithm(+Algorithm)
- A hashing algorithm as specified to crypto_data_hash/3. The default is a cryptographically secure algorithm. If you specify a variable, then it is unified with the algorithm that was used.
- info(+Info)
- Optional context and application specific information, specified as an atom, string or list of bytes. The default is the zero length atom ''.
- salt(+List)
- Optionally, a list of bytes that are used as salt. The default is all zeroes.
- encoding(+Atom)
- Either
utf8(default) oroctet, denoting the representation of Data as in crypto_data_hash/3.
The info/1 option can be used to generate multiple keys from a single master key, using for example values such as
keyandiv, or the name of a file that is to be encrypted.This predicate requires OpenSSL 1.1.0 or greater.
- See also
- - crypto_n_random_bytes/2 to obtain a suitable salt.
- - crypto_data_hash/3 to compute a HMAC signature.