The algorithm of the
CryptoKeyVersion, indicating
what parameters must be used for each cryptographic operation.
The
GOOGLE_SYMMETRIC_ENCRYPTION
algorithm is usable with
CryptoKey.purposeENCRYPT_DECRYPT.
Algorithms beginning with "RSA_SIGN_" are usable with
CryptoKey.purposeASYMMETRIC_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.purposeASYMMETRIC_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.purposeASYMMETRIC_SIGN.
The fields in the name after "EC_SIGN_" correspond to the following
parameters: elliptic curve, digest algorithm.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2026-07-18 UTC."],[],[]]
