CryptoKeyVersionAlgorithm

The algorithm of the CryptoKeyVersion, indicating what parameters must be used for each cryptographic operation.

The GOOGLE_SYMMETRIC_ENCRYPTION algorithm is usable with CryptoKey.purpose ENCRYPT_DECRYPT.

Algorithms beginning with "RSA_SIGN_" are usable with CryptoKey.purpose ASYMMETRIC_SIGN.

The fields in the name after "RSA_SIGN_" correspond to the following parameters: padding algorithm, modulus bit length, and digest algorithm.

For PSS, the salt length used is equal to the length of digest algorithm. For example, RSA_SIGN_PSS_2048_SHA256 will use PSS with a salt length of 256 bits or 32 bytes.

Algorithms beginning with "RSA_DECRYPT_" are usable with CryptoKey.purpose ASYMMETRIC_DECRYPT.

The fields in the name after "RSA_DECRYPT_" correspond to the following parameters: padding algorithm, modulus bit length, and digest algorithm.

Algorithms beginning with "EC_SIGN_" are usable with CryptoKey.purpose ASYMMETRIC_SIGN.

The fields in the name after "EC_SIGN_" correspond to the following parameters: elliptic curve, digest algorithm.

For more information, see Key purposes and algorithms.

Enums
CRYPTO_KEY_VERSION_ALGORITHM_UNSPECIFIED Not specified.
GOOGLE_SYMMETRIC_ENCRYPTION Creates symmetric encryption keys.
RSA_SIGN_PSS_2048_SHA256 RSASSA-PSS 2048 bit key with a SHA256 digest.
RSA_SIGN_PSS_3072_SHA256 RSASSA-PSS 3072 bit key with a SHA256 digest.
RSA_SIGN_PSS_4096_SHA256 RSASSA-PSS 4096 bit key with a SHA256 digest.
RSA_SIGN_PSS_4096_SHA512 RSASSA-PSS 4096 bit key with a SHA512 digest.
RSA_SIGN_PKCS1_2048_SHA256 RSASSA-PKCS1-v1_5 with a 2048 bit key and a SHA256 digest.
RSA_SIGN_PKCS1_3072_SHA256 RSASSA-PKCS1-v1_5 with a 3072 bit key and a SHA256 digest.
RSA_SIGN_PKCS1_4096_SHA256 RSASSA-PKCS1-v1_5 with a 4096 bit key and a SHA256 digest.
RSA_SIGN_PKCS1_4096_SHA512 RSASSA-PKCS1-v1_5 with a 4096 bit key and a SHA512 digest.
RSA_DECRYPT_OAEP_2048_SHA256 RSAES-OAEP 2048 bit key with a SHA256 digest.
RSA_DECRYPT_OAEP_3072_SHA256 RSAES-OAEP 3072 bit key with a SHA256 digest.
RSA_DECRYPT_OAEP_4096_SHA256 RSAES-OAEP 4096 bit key with a SHA256 digest.
RSA_DECRYPT_OAEP_4096_SHA512 RSAES-OAEP 4096 bit key with a SHA512 digest.
EC_SIGN_P256_SHA256 ECDSA on the NIST P-256 curve with a SHA256 digest.
EC_SIGN_P384_SHA384 ECDSA on the NIST P-384 curve with a SHA384 digest.
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