Overview

This section describes the programming interface of the LTC DES driver.

Macros
#define	LTC_DES_KEY_SIZE 8
	LTC DES key size - 64 bits. More...

#define	LTC_DES_IV_SIZE 8
	LTC DES IV size - 8 bytes.

Functions
status_t	LTC_DES_EncryptEcb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t key[LTC_DES_KEY_SIZE])
	Encrypts DES using ECB block mode. More...

status_t	LTC_DES_DecryptEcb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t key[LTC_DES_KEY_SIZE])
	Decrypts DES using ECB block mode. More...

status_t	LTC_DES_EncryptCbc (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key[LTC_DES_KEY_SIZE])
	Encrypts DES using CBC block mode. More...

status_t	LTC_DES_DecryptCbc (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key[LTC_DES_KEY_SIZE])
	Decrypts DES using CBC block mode. More...

status_t	LTC_DES_EncryptCfb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key[LTC_DES_KEY_SIZE])
	Encrypts DES using CFB block mode. More...

status_t	LTC_DES_DecryptCfb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key[LTC_DES_KEY_SIZE])
	Decrypts DES using CFB block mode. More...

status_t	LTC_DES_EncryptOfb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key[LTC_DES_KEY_SIZE])
	Encrypts DES using OFB block mode. More...

status_t	LTC_DES_DecryptOfb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key[LTC_DES_KEY_SIZE])
	Decrypts DES using OFB block mode. More...

status_t	LTC_DES2_EncryptEcb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Encrypts triple DES using ECB block mode with two keys. More...

status_t	LTC_DES2_DecryptEcb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Decrypts triple DES using ECB block mode with two keys. More...

status_t	LTC_DES2_EncryptCbc (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Encrypts triple DES using CBC block mode with two keys. More...

status_t	LTC_DES2_DecryptCbc (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Decrypts triple DES using CBC block mode with two keys. More...

status_t	LTC_DES2_EncryptCfb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Encrypts triple DES using CFB block mode with two keys. More...

status_t	LTC_DES2_DecryptCfb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Decrypts triple DES using CFB block mode with two keys. More...

status_t	LTC_DES2_EncryptOfb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Encrypts triple DES using OFB block mode with two keys. More...

status_t	LTC_DES2_DecryptOfb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE])
	Decrypts triple DES using OFB block mode with two keys. More...

status_t	LTC_DES3_EncryptEcb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Encrypts triple DES using ECB block mode with three keys. More...

status_t	LTC_DES3_DecryptEcb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Decrypts triple DES using ECB block mode with three keys. More...

status_t	LTC_DES3_EncryptCbc (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Encrypts triple DES using CBC block mode with three keys. More...

status_t	LTC_DES3_DecryptCbc (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Decrypts triple DES using CBC block mode with three keys. More...

status_t	LTC_DES3_EncryptCfb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Encrypts triple DES using CFB block mode with three keys. More...

status_t	LTC_DES3_DecryptCfb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Decrypts triple DES using CFB block mode with three keys. More...

status_t	LTC_DES3_EncryptOfb (LTC_Type base, const uint8_t plaintext, uint8_t *ciphertext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Encrypts triple DES using OFB block mode with three keys. More...

status_t	LTC_DES3_DecryptOfb (LTC_Type base, const uint8_t ciphertext, uint8_t *plaintext, uint32_t size, const uint8_t iv[LTC_DES_IV_SIZE], const uint8_t key1[LTC_DES_KEY_SIZE], const uint8_t key2[LTC_DES_KEY_SIZE], const uint8_t key3[LTC_DES_KEY_SIZE])
	Decrypts triple DES using OFB block mode with three keys. More...

Macro Definition Documentation

#define LTC_DES_KEY_SIZE 8

Function Documentation

status_t LTC_DES_EncryptEcb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Encrypts DES using ECB block mode.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes. Must be multiple of 8 bytes.
	key	Input key to use for encryption

Returns: Status from encrypt/decrypt operation

status_t LTC_DES_DecryptEcb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Decrypts DES using ECB block mode.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes. Must be multiple of 8 bytes.
	key	Input key to use for decryption

Returns: Status from encrypt/decrypt operation

status_t LTC_DES_EncryptCbc	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Encrypts DES using CBC block mode.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Ouput ciphertext
	size	Size of input and output data in bytes
	iv	Input initial vector to combine with the first plaintext block. The iv does not need to be secret, but it must be unpredictable.
	key	Input key to use for encryption

Returns: Status from encrypt/decrypt operation

status_t LTC_DES_DecryptCbc	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Decrypts DES using CBC block mode.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input data in bytes
	iv	Input initial vector to combine with the first plaintext block. The iv does not need to be secret, but it must be unpredictable.
	key	Input key to use for decryption

Returns: Status from encrypt/decrypt operation

status_t LTC_DES_EncryptCfb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Encrypts DES using CFB block mode.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
	size	Size of input data in bytes
	iv	Input initial block.
	key	Input key to use for encryption
[out]	ciphertext	Output ciphertext

Returns: Status from encrypt/decrypt operation

status_t LTC_DES_DecryptCfb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Decrypts DES using CFB block mode.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes
	iv	Input initial block.
	key	Input key to use for decryption

Returns: Status from encrypt/decrypt operation

status_t LTC_DES_EncryptOfb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Encrypts DES using OFB block mode.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes
	iv	Input unique input vector. The OFB mode requires that the IV be unique for each execution of the mode under the given key.
	key	Input key to use for encryption

Returns: Status from encrypt/decrypt operation

status_t LTC_DES_DecryptOfb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key[LTC_DES_KEY_SIZE]
	)

Decrypts DES using OFB block mode.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes. Must be multiple of 8 bytes.
	iv	Input unique input vector. The OFB mode requires that the IV be unique for each execution of the mode under the given key.
	key	Input key to use for decryption

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_EncryptEcb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using ECB block mode with two keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes. Must be multiple of 8 bytes.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_DecryptEcb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using ECB block mode with two keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes. Must be multiple of 8 bytes.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_EncryptCbc	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using CBC block mode with two keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes
	iv	Input initial vector to combine with the first plaintext block. The iv does not need to be secret, but it must be unpredictable.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_DecryptCbc	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using CBC block mode with two keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes
	iv	Input initial vector to combine with the first plaintext block. The iv does not need to be secret, but it must be unpredictable.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_EncryptCfb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using CFB block mode with two keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes
	iv	Input initial block.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_DecryptCfb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using CFB block mode with two keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes
	iv	Input initial block.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_EncryptOfb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using OFB block mode with two keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes
	iv	Input unique input vector. The OFB mode requires that the IV be unique for each execution of the mode under the given key.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES2_DecryptOfb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using OFB block mode with two keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes
	iv	Input unique input vector. The OFB mode requires that the IV be unique for each execution of the mode under the given key.
	key1	First input key for key bundle
	key2	Second input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_EncryptEcb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using ECB block mode with three keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes. Must be multiple of 8 bytes.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_DecryptEcb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using ECB block mode with three keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes. Must be multiple of 8 bytes.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_EncryptCbc	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using CBC block mode with three keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input data in bytes
	iv	Input initial vector to combine with the first plaintext block. The iv does not need to be secret, but it must be unpredictable.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_DecryptCbc	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using CBC block mode with three keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes
	iv	Input initial vector to combine with the first plaintext block. The iv does not need to be secret, but it must be unpredictable.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_EncryptCfb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using CFB block mode with three keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and ouput data in bytes
	iv	Input initial block.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_DecryptCfb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using CFB block mode with three keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input data in bytes
	iv	Input initial block.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_EncryptOfb	(	LTC_Type *	base,
		const uint8_t *	plaintext,
		uint8_t *	ciphertext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Encrypts triple DES using OFB block mode with three keys.

Parameters

	base	LTC peripheral base address
	plaintext	Input plaintext to encrypt
[out]	ciphertext	Output ciphertext
	size	Size of input and output data in bytes
	iv	Input unique input vector. The OFB mode requires that the IV be unique for each execution of the mode under the given key.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

status_t LTC_DES3_DecryptOfb	(	LTC_Type *	base,
		const uint8_t *	ciphertext,
		uint8_t *	plaintext,
		uint32_t	size,
		const uint8_t	iv[LTC_DES_IV_SIZE],
		const uint8_t	key1[LTC_DES_KEY_SIZE],
		const uint8_t	key2[LTC_DES_KEY_SIZE],
		const uint8_t	key3[LTC_DES_KEY_SIZE]
	)

Decrypts triple DES using OFB block mode with three keys.

Parameters

	base	LTC peripheral base address
	ciphertext	Input ciphertext to decrypt
[out]	plaintext	Output plaintext
	size	Size of input and output data in bytes
	iv	Input unique input vector. The OFB mode requires that the IV be unique for each execution of the mode under the given key.
	key1	First input key for key bundle
	key2	Second input key for key bundle
	key3	Third input key for key bundle

Returns: Status from encrypt/decrypt operation

Overview

Macros

Functions

Macro Definition Documentation

Function Documentation