diff options
Diffstat (limited to 'drivers/crypto/caam/caampkc.h')
| -rw-r--r-- | drivers/crypto/caam/caampkc.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/crypto/caam/caampkc.h b/drivers/crypto/caam/caampkc.h index 48e408ceaf75..87ab75e9df43 100644 --- a/drivers/crypto/caam/caampkc.h +++ b/drivers/crypto/caam/caampkc.h @@ -14,7 +14,7 @@ /** * caam_priv_key_form - CAAM RSA private key representation - * CAAM RSA private key may have either of two forms. + * CAAM RSA private key may have either of three forms. * * 1. The first representation consists of the pair (n, d), where the * components have the following meanings: @@ -26,10 +26,22 @@ * p the first prime factor of the RSA modulus n * q the second prime factor of the RSA modulus n * d the RSA private exponent + * + * 3. The third representation consists of the quintuple (p, q, dP, dQ, qInv), + * where the components have the following meanings: + * p the first prime factor of the RSA modulus n + * q the second prime factor of the RSA modulus n + * dP the first factors's CRT exponent + * dQ the second factors's CRT exponent + * qInv the (first) CRT coefficient + * + * The benefit of using the third or the second key form is lower computational + * cost for the decryption and signature operations. */ enum caam_priv_key_form { FORM1, FORM2, + FORM3 }; /** @@ -39,6 +51,9 @@ enum caam_priv_key_form { * @d : RSA private exponent raw byte stream * @p : RSA prime factor p of RSA modulus n * @q : RSA prime factor q of RSA modulus n + * @dp : RSA CRT exponent of p + * @dp : RSA CRT exponent of q + * @qinv : RSA CRT coefficient * @tmp1 : CAAM uses this temporary buffer as internal state buffer. * It is assumed to be as long as p. * @tmp2 : CAAM uses this temporary buffer as internal state buffer. @@ -56,6 +71,9 @@ struct caam_rsa_key { u8 *d; u8 *p; u8 *q; + u8 *dp; + u8 *dq; + u8 *qinv; u8 *tmp1; u8 *tmp2; size_t n_sz; @@ -96,6 +114,7 @@ struct rsa_edesc { struct rsa_pub_pdb pub; struct rsa_priv_f1_pdb priv_f1; struct rsa_priv_f2_pdb priv_f2; + struct rsa_priv_f3_pdb priv_f3; } pdb; u32 hw_desc[]; }; @@ -104,5 +123,6 @@ struct rsa_edesc { void init_rsa_pub_desc(u32 *desc, struct rsa_pub_pdb *pdb); void init_rsa_priv_f1_desc(u32 *desc, struct rsa_priv_f1_pdb *pdb); void init_rsa_priv_f2_desc(u32 *desc, struct rsa_priv_f2_pdb *pdb); +void init_rsa_priv_f3_desc(u32 *desc, struct rsa_priv_f3_pdb *pdb); #endif |