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AM263P4: AsymCrypt_RSAPrivkey derivation from .pem

Addison Audette
Prodigy 135 points
Part Number: AM263P4


Tool/software:

We are looking to use the PKA engine to do RSA encryption and decryption however we cant find anyway to derive the AsymCrypt_RSAPrivkey data type from a .pem file we have stored to be able to call the RSA private function call ( AsymCrypt_Return_t AsymCrypt_RSAPrivate(AsymCrypt_Handle handle, const uint32_t m[RSA_MAX_LENGTH], const struct AsymCrypt_RSAPrivkey *k, uint32_t result[RSA_MAX_LENGTH]))

Does anyone know how to convert a RSA private key .pem file into the AsymCrypt_RSAPrivkey data type?

  • 0
    TI__Guru* 87321 points

    Hi,

    Sorry for the delay in response.

    The format to be provided as input to the API is BigInt format.

    The TIFS documentation provides APIs in C:\ti\tifs_am263px_11_00_00_01\source\imports\security_common\drivers\crypto\crypto_util.h, such as Crypto_Uint32ToBigInt, which would get the data in the bigInt format, which can be provided into AsymCrypt_RSAPrivate

    Thanks and Regards,

    Nikhil Dasan