diff options
Diffstat (limited to 'include/u-boot')
| -rw-r--r-- | include/u-boot/rsa-mod-exp.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/include/u-boot/rsa-mod-exp.h b/include/u-boot/rsa-mod-exp.h index 59cd9ea..fce445a 100644 --- a/include/u-boot/rsa-mod-exp.h +++ b/include/u-boot/rsa-mod-exp.h @@ -35,9 +35,41 @@ struct key_prop { * @sig: RSA PKCS1.5 signature * @sig_len: Length of signature in number of bytes * @node: Node with RSA key elements like modulus, exponent, R^2, n0inv - * @out: Result in form of byte array + * @out: Result in form of byte array of len equal to sig_len */ int rsa_mod_exp_sw(const uint8_t *sig, uint32_t sig_len, struct key_prop *node, uint8_t *out); +int rsa_mod_exp(struct udevice *dev, const uint8_t *sig, uint32_t sig_len, + struct key_prop *node, uint8_t *out); + +/** + * struct struct mod_exp_ops - Driver model for RSA Modular Exponentiation + * operations + * + * The uclass interface is implemented by all crypto devices which use + * driver model. + */ +struct mod_exp_ops { + /** + * Perform Modular Exponentiation + * + * Operation: out[] = sig ^ exponent % modulus + * + * @dev: RSA Device + * @sig: RSA PKCS1.5 signature + * @sig_len: Length of signature in number of bytes + * @node: Node with RSA key elements like modulus, exponent, + * R^2, n0inv + * @out: Result in form of byte array of len equal to sig_len + * + * This function computes exponentiation over the signature. + * Returns: 0 if exponentiation is successful, or a negative value + * if it wasn't. + */ + int (*mod_exp)(struct udevice *dev, const uint8_t *sig, + uint32_t sig_len, struct key_prop *node, + uint8_t *outp); +}; + #endif |