ica_3des_ecb

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Purpose

Encrypt or decrypt data with an 3DES key using Electronic Code Book (ECB) mode, as described in NIST Special Publication 800-38A Chapter 6.1.

Format


unsigned int ica_3des_ecb(const unsigned char *in_data,
  unsigned char *out_data,
  unsigned long data_length,
  const unsigned char *key,
  unsigned int direction);

Required hardware support

KM-DEA-192

Parameters

const unsigned char *in_data
Pointer to a readable buffer that contains the message to be encrypted or decrypted. The size of the message in bytes is data_length. The size of this buffer must be at least as large as data_length.
unsigned char *out_data
Pointer to a writeable buffer to contain the resulting encrypted or decrypted message. The size of this buffer in bytes must be at least as large as data_length.
unsigned long data_length
Length in bytes of the message to be encrypted or decrypted, which resides at the beginning of in_data. data_length must be a multiple of the cipher block size (8 bytes for 3DES).
const unsigned char *key
Pointer to a valid 3DES key of 24 bytes in length.
unsigned int direction
0
Use the decrypt function.
1
Use the encrypt function.

Return codes

0
Success

For return codes indicating exceptions, see Return codes.