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sys.asymmetric_keys (Transact-SQL)

Returns a row for each asymmetric key.

Column name

Data type

Description

name

sysname

Name of the key. Is unique within the database.

principal_id

int

ID of the database principal that owns the key.

asymmetric_key_id

int

ID of the key. Is unique within the database.

pvt_key_encryption_type

char(2)

How the key is encrypted.

NA = Not encrypted

MK = Key is encrypted by the master key

PW = Key is encrypted by a user-defined password

SK = Key is encrypted by service master key.

pvt_key_encryption_type_desc

nvarchar(60)

Description of how the private key is encrypted.

NO_PRIVATE_KEY

ENCRYPTED_BY_MASTER_KEY

ENCRYPTED_BY_PASSWORD

ENCRYPTED_BY_SERVICE_MASTER_KEY

thumbprint

varbinary(32)

SHA-1 hash of the key. The hash is globally unique.

algorithm

char(2)

Algorithm used with the key.

1R = 512-bit RSA

2R = 1024-bit RSA

3R = 2048-bit RSA

algorithm_desc

nvarchar(60)

Description of the algorithm used with the key.

RSA_512

RSA_1024

RSA_2048

key_length

int

Bit length of the key.

sid

varbinary(85)

Login SID for this key. For Extensible Key Management keys this value will be NULL.

string_sid

nvarchar(128)

String representation of the login SID of the key. For Extensible Key Management keys this value will be NULL.

public_key

varbinary(max)

Public key.

attested_by

nvarchar(260)

System use only.

provider_type

nvarchar(120)

Type of cryptographic provider:

CRYPTOGRAPHIC PROVIDER = Extensible Key Management keys

NULL = Non-Extensible Key Management keys

cryptographic_provider_guid

uniqueidentifier

GUID for the cryptographic provider. For non-Extensible Key Management keys this value will be NULL.

cryptographic_provider_algid

sql_variant

Algorithm ID for the cryptographic provider. For non-Extensible Key Management keys this value will be NULL.

In SQL Server 2005 and later versions, the visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. For more information, see Metadata Visibility Configuration.

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