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Add TLS-1.2 PSK-to-MS key derivation algorithm identifier to PSA API

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Hanno Becker
2018-10-12 11:56:55 +01:00
parent 65b691793d
commit 8dbfca4628
2 changed files with 55 additions and 0 deletions
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16
include/psa/crypto_sizes.h
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@ -131,6 +131,22 @@
#define PSA_VENDOR_ECC_MAX_CURVE_BITS 0
#endif
/** \def PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN
*
* This macro returns the maximum length of the PSK supported
* by the TLS-1.2 PSK-to-MS key derivation.
*
* Quoting RFC 4279, Sect 5.3:
* TLS implementations supporting these ciphersuites MUST support
* arbitrary PSK identities up to 128 octets in length, and arbitrary
* PSKs up to 64 octets in length. Supporting longer identities and
* keys is RECOMMENDED.
*
* Therefore, no implementation should define a value smaller than 64
* for #PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN.
*/
#define PSA_ALG_TLS12_PSK_TO_MS_MAX_PSK_LEN 128
/** \def PSA_ASYMMETRIC_SIGNATURE_MAX_SIZE
*
* Maximum size of an asymmetric signature.