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Merge pull request #4197 from bensze01/psa_ccm_nonce_length

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Correct the maximum generated nonce length for CCM
This commit is contained in:
Gilles Peskine 2021-03-16 10:10:41 +01:00 committed by GitHub
commit 01a622a1a4
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1 changed files with 5 additions and 4 deletions
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9
include/psa/crypto_sizes.h
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@ -351,9 +351,10 @@
* or the parameters are incompatible, return 0. * or the parameters are incompatible, return 0.
*/ */
#define PSA_AEAD_NONCE_LENGTH(key_type, alg) \ #define PSA_AEAD_NONCE_LENGTH(key_type, alg) \
(PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) == 16 && \ (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) == 16 ? \
(PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg) == PSA_ALG_CCM || \ PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg) == PSA_ALG_CCM ? 13 : \
PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg) == PSA_ALG_GCM) ? 12 : \ PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg) == PSA_ALG_GCM ? 12 : \
0 : \
(key_type) == PSA_KEY_TYPE_CHACHA20 && \ (key_type) == PSA_KEY_TYPE_CHACHA20 && \
PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg) == PSA_ALG_CHACHA20_POLY1305 ? 12 : \ PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg) == PSA_ALG_CHACHA20_POLY1305 ? 12 : \
0) 0)
@ -369,7 +370,7 @@
* just the largest size that may be generated by * just the largest size that may be generated by
* #psa_aead_generate_nonce(). * #psa_aead_generate_nonce().
*/ */
#define PSA_AEAD_NONCE_MAX_SIZE 12 #define PSA_AEAD_NONCE_MAX_SIZE 13
/** A sufficient output buffer size for psa_aead_update(). /** A sufficient output buffer size for psa_aead_update().
* *