menuconfig ASYMMETRIC_KEY_TYPE tristate "Asymmetric (public-key cryptographic) key type" depends on KEYS help This option provides support for a key type that holds the data for the asymmetric keys used for public key cryptographic operations such as encryption, decryption, signature generation and signature verification. if ASYMMETRIC_KEY_TYPE config ASYMMETRIC_PUBLIC_KEY_SUBTYPE tristate "Asymmetric public-key crypto algorithm subtype" select MPILIB help This option provides support for asymmetric public key type handling. If signature generation and/or verification are to be used, appropriate hash algorithms (such as SHA-1) must be available. ENOPKG will be reported if the requisite algorithm is unavailable. config PUBLIC_KEY_ALGO_RSA tristate "RSA public-key algorithm" depends on ASYMMETRIC_PUBLIC_KEY_SUBTYPE select MPILIB_EXTRA help This option enables support for the RSA algorithm (PKCS#1, RFC3447). config X509_CERTIFICATE_PARSER tristate "X.509 certificate parser" depends on ASYMMETRIC_PUBLIC_KEY_SUBTYPE select ASN1 select OID_REGISTRY help This option procides support for parsing X.509 format blobs for key data and provides the ability to instantiate a crypto key from a public key packet found inside the certificate. endif # ASYMMETRIC_KEY_TYPE