| EN | Peripheral enable.
- 0 : Disable PKA.
- 1 : Enable PKA.
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| START | Start the operation
- 0: No operation
- 1: Writing 1’ to this bit starts the operation which is selected by MODE[5:0], using the operands and data
already written to the PKA RAM. This bit is always read as 0’.
Nota: START is ignored if PKA is busy.
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| SECLVL | Security enable.
- 0: No side channel countermeasure
- 1: Square and Multiply always / Double and Add always
|
| MODE | PKA operation code
- 000000 : Compute Montgomery parameter and modular exponentiation
- 000001 : Compute Montgomery parameter
- 000010 : Compute modular exponentiation only (Montgomery parameter should be loaded)
- 100000 : Compute Montgomery parameter and compute ECC kP operation
- 100010 : Compute the ECC kP primitive only (Montgomery parameter should be loaded)
- 100100 : ECDSA sign
- 100110 : ECDSA Verification
- 101000 : Point Check
- 000111 : RSA CRT exponentiation
- 001000 : Modular inversion
- 001001 : Arithmetic addition
- 001010 : Arithmetic Subtraction
- 001011 : Arithmetic multiplication
- 001100 : Comparison
- 001101 : Modular Reduction
- 001110 : Modular Addition
- 001111 : Modular Subtraction
- 010000 : Montgomery Multiplication
|
| PROCENDIE | End of operation interrupt enable
- 0: Interrupt is disabled.
- 1: An interrupt is generated when PROCENDF (PKA_SR[17]) is set.
|
| RAMERRIE | RAM error interrupt enable
- 0: Interrupt is disabled.
- 1: An interrupt is generated when RAMERRF (PKA_SR[19]) is set.
|
| ADDRERRIE | Address error interrupt enable
- 0: Interrupt is disabled.
- 1: An interrupt is generated when ADDRERRF (PKA_SR[20] is set.
|