OPERRIE=B_0x0, PROCENDIE=B_0x0, ADDRERRIE=B_0x0, RAMERRIE=B_0x0, EN=B_0x0, MODE=B_0x0
PKA control register
| EN | PKA enable. 0 (B_0x0): Disable PKA 1 (B_0x1): Enable PKA.PKA becomes functional when INITOK is set by hardware in PKA_SR. |
| START | start the operation |
| MODE | PKA operation code 0 (B_0x0): Montgomery parameter computation then modular exponentiation 1 (B_0x1): Montgomery parameter computation only 2 (B_0x2): Modular exponentiation only (Montgomery parameter must be loaded first) 3 (B_0x3): Modular exponentiation (protected, used when manipulating secrets) 7 (B_0x7): RSA CRT exponentiation 8 (B_0x8): Modular inversion 9 (B_0x9): Arithmetic addition 10 (B_0xA): Arithmetic subtraction 11 (B_0xB): Arithmetic multiplication 12 (B_0xC): Arithmetic comparison 13 (B_0xD): Modular reduction 14 (B_0xE): Modular addition 15 (B_0xF): Modular subtraction 16 (B_0x10): Montgomery multiplication 32 (B_0x20): Montgomery parameter computation then ECC scalar multiplication 35 (B_0x23): ECC complete addition 36 (B_0x24): ECDSA sign 38 (B_0x26): ECDSA verification 39 (B_0x27): ECC double base ladder 40 (B_0x28): Point on elliptic curve Fp check 47 (B_0x2F): ECC projective to affine |
| PROCENDIE | End of operation interrupt enable 0 (B_0x0): No interrupt is generated when PROCENDF flag is set in PKA_SR. 1 (B_0x1): An interrupt is generated when PROCENDF flag is set in PKA_SR. |
| RAMERRIE | RAM error interrupt enable 0 (B_0x0): No interrupt is generated when RAMERRF flag is set in PKA_SR. 1 (B_0x1): An interrupt is generated when RAMERRF flag is set in PKA_SR. |
| ADDRERRIE | Address error interrupt enable 0 (B_0x0): No interrupt is generated when ADDRERRF flag is set in PKA_SR. 1 (B_0x1): An interrupt is generated when ADDRERRF flag is set in PKA_SR. |
| OPERRIE | Operation error interrupt enable 0 (B_0x0): No interrupt is generated when OPERRF flag is set in PKA_SR. 1 (B_0x1): An interrupt is generated when OPERRF flag is set in PKA_SR. |