# PKCS \#11 library attributes tables for AWS CloudHSM Client SDK 5 The PKCS \#11 library tables for AWS CloudHSM contain a list of attributes that differ by key types. It indicates whether a given attribute is supported for a particular key type when using a specific cryptographic function with AWS CloudHSM. **Legend:** + ✔ indicates that CloudHSM supports the attribute for the specific key type. + ✖ indicates that CloudHSM does not support the attribute for the specific key type. + R indicates that the attribute value is set to read-only for the specific key type. + S indicates that the attribute cannot be read by the `GetAttributeValue` as it is sensitive. + An empty cell in the Default Value column indicates that there is no specific default value assigned to the attribute. ## GenerateKeyPair

Attribute	Key Type						Default Value
	EC private	EC public	RSA private	RSA public	ML-DSA private	ML-DSA public
`CKA_CLASS`	✔	✔	✔	✔	✔	✔
`CKA_KEY_TYPE`	✔	✔	✔	✔	✔	✔
`CKA_LABEL`	✔	✔	✔	✔	✔	✔
`CKA_ID`	✔	✔	✔	✔	✔	✔
`CKA_LOCAL`	R	R	R	R	R	R	True
`CKA_TOKEN`	✔	✔	✔	✔	✔	✔	False
`CKA_PRIVATE`	✔1	✔1	✔1	✔1	✔1	✔1	True
`CKA_ENCRYPT`	✖	✔3	✖	✔	✖	✖	False
`CKA_DECRYPT`	✔3	✖	✔	✖	✖	✖	False
`CKA_DERIVE`	✔	✔	✔	✔	✖	✖	False
`CKA_MODIFIABLE`	✔	✔	✔	✔	✔	✔	True
`CKA_DESTROYABLE`	✔	✔	✔	✔	✔	✔	True
`CKA_SIGN`	✔	✖	✔	✖	✔	✖	False
`CKA_SIGN_RECOVER`	✖	✖	✖	✖	✖	✖
`CKA_VERIFY`	✖	✔	✖	✔	✖	✔	False
`CKA_VERIFY_RECOVER`	✖	✖	✖	✖	✖	✖
`CKA_WRAP`	✖	✔3	✖	✔	✖	✖	False
`CKA_WRAP_TEMPLATE`	✖	✔	✖	✔	✖	✖
`CKA_TRUSTED`	✖	✔	✖	✔	✖	✔	False
`CKA_WRAP_WITH_TRUSTED`	✔	✖	✔	✖	✔	✖	False
`CKA_UNWRAP`	✔3	✖	✔	✖	✖	✖	False
`CKA_UNWRAP_TEMPLATE`	✔	✖	✔	✖	✖	✖
`CKA_SENSITIVE`	✔1	✖	✔1	✖	✔	✖	True
`CKA_ALWAYS_SENSITIVE`	R	✖	R	✖	✖	✖
`CKA_EXTRACTABLE`	✔	✖	✔	✖	✔	✖	True
`CKA_NEVER_EXTRACTABLE`	R	✖	R	✖	✖	✖
`CKA_MODULUS`	✖	✖	✖	✖	✖	✖
`CKA_MODULUS_BITS`	✖	✖	✖	✔2	✖	✖
`CKA_PRIME_1`	✖	✖	✖	✖	✖	✖
`CKA_PRIME_2`	✖	✖	✖	✖	✖	✖
`CKA_COEFFICIENT`	✖	✖	✖	✖	✖	✖
`CKA_EXPONENT_1`	✖	✖	✖	✖	✖	✖
`CKA_EXPONENT_2`	✖	✖	✖	✖	✖	✖
`CKA_PRIVATE_EXPONENT`	✖	✖	✖	✖	✖	✖
`CKA_PUBLIC_EXPONENT`	✖	✖	✖	✔2	✖	✖
`CKA_EC_PARAMS`	✖	✔2	✖	✖	✖	✖
`CKA_EC_POINT`	✖	✖	✖	✖	✖	✖
`CKA_VALUE`	✖	✖	✖	✖	✖	✖
`CKA_VALUE_LEN`	✖	✖	✖	✖	✖	✖
`CKA_CHECK_VALUE`	R	R	R	R	✖	✖
`CKA_CLOUDHSM_PARAMETER_SET`	✖	✖	✖	✖	✔	✔

## GenerateKey

Attribute	Key Type			Default Value
	AES	DES3	Generic Secret
`CKA_CLASS`	✔	✔	✔
`CKA_KEY_TYPE`	✔	✔	✔
`CKA_LABEL`	✔	✔	✔
`CKA_ID`	✔	✔	✔
`CKA_LOCAL`	R	R	R	True
`CKA_TOKEN`	✔	✔	✔	False
`CKA_PRIVATE`	✔1	✔1	✔1	True
`CKA_ENCRYPT`	✔	✔	✖	False
`CKA_DECRYPT`	✔	✔	✖	False
`CKA_DERIVE`	✔	✔	✔	False
`CKA_MODIFIABLE`	✔	✔	✔	True
`CKA_DESTROYABLE`	✔	✔	✔	True
`CKA_SIGN`	✔	✔	✔	True
`CKA_SIGN_RECOVER`	✖	✖	✖
`CKA_VERIFY`	✔	✔	✔	True
`CKA_VERIFY_RECOVER`	✖	✖	✖
`CKA_WRAP`	✔	✔	✖	False
`CKA_WRAP_TEMPLATE`	✔	✔	✖
`CKA_TRUSTED`	✔	✔	✖	False
`CKA_WRAP_WITH_TRUSTED`	✔	✔	✔	False
`CKA_UNWRAP`	✔	✔	✖	False
`CKA_UNWRAP_TEMPLATE`	✔	✔	✖
`CKA_SENSITIVE`	✔	✔	✔	True
`CKA_ALWAYS_SENSITIVE`	✖	✖	✖
`CKA_EXTRACTABLE`	✔	✔	✔	True
`CKA_NEVER_EXTRACTABLE`	R	R	R
`CKA_MODULUS`	✖	✖	✖
`CKA_MODULUS_BITS`	✖	✖	✖
`CKA_PRIME_1`	✖	✖	✖
`CKA_PRIME_2`	✖	✖	✖
`CKA_COEFFICIENT`	✖	✖	✖
`CKA_EXPONENT_1`	✖	✖	✖
`CKA_EXPONENT_2`	✖	✖	✖
`CKA_PRIVATE_EXPONENT`	✖	✖	✖
`CKA_PUBLIC_EXPONENT`	✖	✖	✖
`CKA_EC_PARAMS`	✖	✖	✖
`CKA_EC_POINT`	✖	✖	✖
`CKA_VALUE`	✖	✖	✖
`CKA_VALUE_LEN`	✔2	✖	✔2
`CKA_CHECK_VALUE`	R	R	R

## CreateObject **ML-DSA and CreateObject** ML-DSA key import through `C_CreateObject` is not supported. To use ML-DSA keys, generate them directly on the HSM using `C_GenerateKeyPair`.

Attribute	Key Type							Default Value
	EC private	EC public	RSA private	RSA public	AES	DES3	Generic Secret
`CKA_CLASS`	✔2	✔2	✔2	✔2	✔2	✔2	✔2
`CKA_KEY_TYPE`	✔2	✔2	✔2	✔2	✔2	✔2	✔2
`CKA_LABEL`	✔	✔	✔	✔	✔	✔	✔
`CKA_ID`	✔	✔	✔	✔	✔	✔	✔
`CKA_LOCAL`	R	R	R	R	R	R	R	False
`CKA_TOKEN`	✔	✔	✔	✔	✔	✔	✔	False
`CKA_PRIVATE`	✔1	✔1	✔1	✔1	✔1	✔1	✔1	True
`CKA_ENCRYPT`	✖	✖	✖	✔	✔	✔	✖	False
`CKA_DECRYPT`	✖	✖	✔	✖	✔	✔	✖	False
`CKA_DERIVE`	✔	✔	✔	✔	✔	✔	✔	False
`CKA_MODIFIABLE`	✔	✔	✔	✔	✔	✔	✔	True
`CKA_DESTROYABLE`	✔	✔	✔	✔	✔	✔	✔	True
`CKA_SIGN`	✔	✖	✔	✖	✔	✔	✔	False
`CKA_SIGN_RECOVER`	✖	✖	✖	✖	✖	✖	✖	False
`CKA_VERIFY`	✖	✔	✖	✔	✔	✔	✔	False
`CKA_VERIFY_RECOVER`	✖	✖	✖	✖	✖	✖	✖
`CKA_WRAP`	✖	✖	✖	✔	✔	✔	✖	False
`CKA_WRAP_TEMPLATE`	✖	✔	✖	✔	✔	✔	✖
`CKA_TRUSTED`	✖	✔	✖	✔	✔	✔	✖	False
`CKA_WRAP_WITH_TRUSTED`	✔	✖	✔	✖	✔	✔	✔	False
`CKA_UNWRAP`	✖	✖	✔	✖	✔	✔	✖	False
`CKA_UNWRAP_TEMPLATE`	✔	✖	✔	✖	✔	✔	✖
`CKA_SENSITIVE`	✔	✖	✔	✖	✔	✔	✔	True
`CKA_ALWAYS_SENSITIVE`	R	✖	R	✖	R	R	R
`CKA_EXTRACTABLE`	✔	✖	✔	✖	✔	✔	✔	True
`CKA_NEVER_EXTRACTABLE`	R	✖	R	✖	R	R	R
`CKA_MODULUS`	✖	✖	✔2	✔2	✖	✖	✖
`CKA_MODULUS_BITS`	✖	✖	✖	✖	✖	✖	✖
`CKA_PRIME_1`	✖	✖	✔	✖	✖	✖	✖
`CKA_PRIME_2`	✖	✖	✔	✖	✖	✖	✖
`CKA_COEFFICIENT`	✖	✖	✔	✖	✖	✖	✖
`CKA_EXPONENT_1`	✖	✖	✔	✖	✖	✖	✖
`CKA_EXPONENT_2`	✖	✖	✔	✖	✖	✖	✖
`CKA_PRIVATE_EXPONENT`	✖	✖	✔2	✖	✖	✖	✖
`CKA_PUBLIC_EXPONENT`	✖	✖	✔2	✔2	✖	✖	✖
`CKA_EC_PARAMS`	✔2	✔2	✖	✖	✖	✖	✖
`CKA_EC_POINT`	✖	✔2	✖	✖	✖	✖	✖
`CKA_VALUE`	✔2	✖	✖	✖	✔2	✔2	✔2
`CKA_VALUE_LEN`	✖	✖	✖	✖	✖	✖	✖
`CKA_CHECK_VALUE`	R	R	R	R	R	R	R

## UnwrapKey

Attribute	Key Type					Default Value
	EC private	RSA private	AES	DES3	Generic Secret
`CKA_CLASS`	✔2	✔2	✔2	✔2	✔2
`CKA_KEY_TYPE`	✔2	✔2	✔2	✔2	✔2
`CKA_LABEL`	✔	✔	✔	✔	✔
`CKA_ID`	✔	✔	✔	✔	✔
`CKA_LOCAL`	R	R	R	R	R	False
`CKA_TOKEN`	✔	✔	✔	✔	✔	False
`CKA_PRIVATE`	✔1	✔1	✔1	✔1	✔1	True
`CKA_ENCRYPT`	✖	✖	✔	✔	✖	False
`CKA_DECRYPT`	✖	✔	✔	✔	✖	False
`CKA_DERIVE`	✔	✔	✔	✔	✔	False
`CKA_MODIFIABLE`	✔	✔	✔	✔	✔	True
`CKA_DESTROYABLE`	✔	✔	✔	✔	✔	True
`CKA_SIGN`	✔	✔	✔	✔	✔	False
`CKA_SIGN_RECOVER`	✖	✖	✖	✖	✖	False
`CKA_VERIFY`	✖	✖	✔	✔	✔	False
`CKA_VERIFY_RECOVER`	✖	✖	✖	✖	✖
`CKA_WRAP`	✖	✖	✔	✔	✖	False
`CKA_UNWRAP`	✖	✔	✔	✔	✖	False
`CKA_SENSITIVE`	✔	✔	✔	✔	✔	True
`CKA_EXTRACTABLE`	✔	✔	✔	✔	✔	True
`CKA_NEVER_EXTRACTABLE`	R	R	R	R	R
`CKA_ALWAYS_SENSITIVE`	R	R	R	R	R
`CKA_MODULUS`	✖	✖	✖	✖	✖
`CKA_MODULUS_BITS`	✖	✖	✖	✖	✖
`CKA_PRIME_1`	✖	✖	✖	✖	✖
`CKA_PRIME_2`	✖	✖	✖	✖	✖
`CKA_COEFFICIENT`	✖	✖	✖	✖	✖
`CKA_EXPONENT_1`	✖	✖	✖	✖	✖
`CKA_EXPONENT_2`	✖	✖	✖	✖	✖
`CKA_PRIVATE_EXPONENT`	✖	✖	✖	✖	✖
`CKA_PUBLIC_EXPONENT`	✖	✖	✖	✖	✖
`CKA_EC_PARAMS`	✖	✖	✖	✖	✖
`CKA_EC_POINT`	✖	✖	✖	✖	✖
`CKA_VALUE`	✖	✖	✖	✖	✖
`CKA_VALUE_LEN`	✖	✖	✖	✖	✖
`CKA_CHECK_VALUE`	R	R	R	R	R

## DeriveKey

Attribute	Key Type			Default Value
	AES	DES3	Generic Secret
`CKA_CLASS`	✔2	✔2	✔2
`CKA_KEY_TYPE`	✔2	✔2	✔2
`CKA_LABEL`	✔	✔	✔
`CKA_ID`	✔	✔	✔
`CKA_LOCAL`	R	R	R	True
`CKA_TOKEN`	✔	✔	✔	False
`CKA_PRIVATE`	✔1	✔1	✔1	True
`CKA_ENCRYPT`	✔	✔	✖	False
`CKA_DECRYPT`	✔	✔	✖	False
`CKA_DERIVE`	✔	✔	✔	False
`CKA_MODIFIABLE`	✔	✔	✔	True
`CKA_DESTROYABLE`	✔	✔	✔	True
`CKA_SIGN`	✔	✔	✔	False
`CKA_SIGN_RECOVER`	✖	✖	✖
`CKA_VERIFY`	✔	✔	✔	False
`CKA_VERIFY_RECOVER`	✖	✖	✖
`CKA_WRAP`	✔	✔	✖	False
`CKA_UNWRAP`	✔	✔	✖	False
`CKA_SENSITIVE`	R	R	R	True
`CKA_EXTRACTABLE`	✔	✔	✔	True
`CKA_NEVER_EXTRACTABLE`	R	R	R
`CKA_ALWAYS_SENSITIVE`	R	R	R
`CKA_MODULUS`	✖	✖	✖
`CKA_MODULUS_BITS`	✖	✖	✖
`CKA_PRIME_1`	✖	✖	✖
`CKA_PRIME_2`	✖	✖	✖
`CKA_COEFFICIENT`	✖	✖	✖
`CKA_EXPONENT_1`	✖	✖	✖
`CKA_EXPONENT_2`	✖	✖	✖
`CKA_PRIVATE_EXPONENT`	✖	✖	✖
`CKA_PUBLIC_EXPONENT`	✖	✖	✖
`CKA_EC_PARAMS`	✖	✖	✖
`CKA_EC_POINT`	✖	✖	✖
`CKA_VALUE`	✖	✖	✖
`CKA_VALUE_LEN`	✔2	✖	✔2
`CKA_CHECK_VALUE`	R	R	R

## GetAttributeValue

Attribute	Key Type
	EC private	EC public	RSA private	RSA public	ML-DSA private	ML-DSA public	AES	DES3	Generic Secret
`CKA_CLASS`	✔	✔	✔	✔	✔	✔	✔	✔	✔
`CKA_KEY_TYPE`	✔	✔	✔	✔	✔	✔	✔	✔	✔
`CKA_LABEL`	✔	✔	✔	✔	✔	✔	✔	✔	✔
`CKA_ID`	✔	✔	✔	✔	✔	✔	✔	✔	✔
`CKA_LOCAL`	✔	✔	✔	✔	R	R	✔	✔	✔
`CKA_TOKEN`	✔	✔	✔	✔	✔	✔	✔	✔	✔
`CKA_PRIVATE`	✔1	✔1	✔1	✔1	✔	✔	✔1	✔1	✔1
`CKA_ENCRYPT`	✖	✖	✖	✔	✖	✖	✔	✔	✖
`CKA_DECRYPT`	✖	✖	✔	✖	✖	✖	✔	✔	✖
`CKA_DERIVE`	✔	✔	✔	✔	✖	✖	✔	✔	✔
`CKA_MODIFIABLE`	✔	✔	✔	✔	✔	✔	✔	✔	✔
`CKA_DESTROYABLE`	✔	✔	✔	✔	✔	✔	✔	✔	✔
`CKA_SIGN`	✔	✖	✔	✖	✔	✖	✔	✔	✔
`CKA_SIGN_RECOVER`	✖	✖	✔	✖	✖	✖	✖	✖	✖
`CKA_VERIFY`	✖	✔	✖	✔	✖	✔	✔	✔	✔
`CKA_VERIFY_RECOVER`	✖	✖	✖	✔	✖	✖	✖	✖	✖
`CKA_WRAP`	✖	✖	✖	✔	✖	✖	✔	✔	✖
`CKA_WRAP_TEMPLATE`	✖	✔	✖	✔	✖	✖	✔	✔	✖
`CKA_TRUSTED`	✖	✔	✖	✔	✖	✔	✔	✔	✔
`CKA_WRAP_WITH_TRUSTED`	✔	✖	✔	✖	✔	✖	✔	✔	✔
`CKA_UNWRAP`	✖	✖	✔	✖	✖	✖	✔	✔	✖
`CKA_UNWRAP_TEMPLATE`	✔	✖	✔	✖	✖	✖	✔	✔	✖
`CKA_SENSITIVE`	✔	✖	✔	✖	✔	✖	✔	✔	✔
`CKA_EXTRACTABLE`	✔	✖	✔	✖	✔	✖	✔	✔	✔
`CKA_NEVER_EXTRACTABLE`	✔	✖	✔	✖	R	R	✔	✔	✔
`CKA_ALWAYS_SENSITIVE`	R	R	R	R	R	R	R	R	R
`CKA_MODULUS`	✖	✖	✔	✔	✖	✖	✖	✖	✖
`CKA_MODULUS_BITS`	✖	✖	✖	✔	✖	✖	✖	✖	✖
`CKA_PRIME_1`	✖	✖	S	✖	✖	✖	✖	✖	✖
`CKA_PRIME_2`	✖	✖	S	✖	✖	✖	✖	✖	✖
`CKA_COEFFICIENT`	✖	✖	S	✖	✖	✖	✖	✖	✖
`CKA_EXPONENT_1`	✖	✖	S	✖	✖	✖	✖	✖	✖
`CKA_EXPONENT_2`	✖	✖	S	✖	✖	✖	✖	✖	✖
`CKA_PRIVATE_EXPONENT`	✖	✖	S	✖	✖	✖	✖	✖	✖
`CKA_PUBLIC_EXPONENT`	✖	✖	✔	✔	✖	✖	✖	✖	✖
`CKA_EC_PARAMS`	✔	✔	✖	✖	✖	✖	✖	✖	✖
`CKA_EC_POINT`	✖	✔	✖	✖	✖	✖	✖	✖	✖
`CKA_VALUE`	S	✖	✖	✖	✖	✖	✔	✔	✔
`CKA_VALUE_LEN`	✖	✖	✖	✖	✖	✖	✔	✖	✔
`CKA_CHECK_VALUE`	✔	✔	✔	✔	✖	✖	✔	✔	✖
`CKA_CLOUDHSM_PARAMETER_SET`	✖	✖	✖	✖	R	R	✖	✖	✖

**Attribute annotations** + [1] This attribute is partially supported by the firmware and must be explicitly set only to the default value. + [2] Mandatory attribute. + [3] For Ed25519 keys (EC keys with ed25519 curve): CKA\_ENCRYPT, CKA\_DECRYPT, CKA\_WRAP, CKA\_UNWRAP, and CKA\_DERIVE are not functional. Ed25519 keys are signing-only and do not support encryption, wrapping, or key derivation operations.