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Introduce PSA_ALG_STREAM_CIPHER

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This algorithm replaces the pre-existing stream cipher algorithms.
The underlying stream cipher is determined by the key type.

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
This commit is contained in:
Bence Szépkúti
2020-12-07 18:20:28 +01:00
parent d4585ff3c5
commit 1de907d4a4
4 changed files with 18 additions and 18 deletions
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22
include/psa/crypto_values.h
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@@ -933,21 +933,15 @@
(((alg) & (PSA_ALG_CATEGORY_MASK | PSA_ALG_CIPHER_STREAM_FLAG)) == \
(PSA_ALG_CATEGORY_CIPHER | PSA_ALG_CIPHER_STREAM_FLAG))
/** The ARC4 stream cipher algorithm.
/** The stream cipher mode of a stream cipher algorithm.
*
* The underlying stream cipher is determined by the key type.
* - To use ChaCha20, use a key type of #PSA_KEY_TYPE_CHACHA20
* and algorithm id #PSA_ALG_STREAM_CIPHER.
* - To use ARC4, use a key type of #PSA_KEY_TYPE_ARC4
* and algorithm id #PSA_ALG_STREAM_CIPHER.
*/
#define PSA_ALG_ARC4 ((psa_algorithm_t)0x04800001)
/** The ChaCha20 stream cipher.
*
* ChaCha20 is defined in RFC 7539.
*
* The nonce size for psa_cipher_set_iv() or psa_cipher_generate_iv()
* must be 12.
*
* The initial block counter is always 0.
*
*/
#define PSA_ALG_CHACHA20 ((psa_algorithm_t)0x04800005)
#define PSA_ALG_STREAM_CIPHER ((psa_algorithm_t)0x04800100)
/** The CTR stream cipher mode.
*