function _encrypt_encryption_methods_openssl_hkdf in Encrypt 7.2

Generate a hash.

Parameters

string $hash_function: Hash function.

string $ikm: Initial keying material.

int $length: Length of the key in bytes.

string $salt: Salt.

Return value

string The generated key.

1 call to _encrypt_encryption_methods_openssl_hkdf()

_encrypt_encryption_methods_openssl in plugins/encryption_methods/openssl.inc

Callback for Encrypt implementation: OpenSSL.

File

plugins/encryption_methods/openssl.inc, line 143

Code

function _encrypt_encryption_methods_openssl_hkdf($hash_function, $ikm, $length, $salt) {
  $key = hash_hmac($hash_function, $ikm, $salt, TRUE);
  $key = substr($key, 0, $length);
  return $key;
}