aws_sdk_kms::operation::derive_shared_secret::builders

Struct DeriveSharedSecretFluentBuilder

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pub struct DeriveSharedSecretFluentBuilder { /* private fields */ }
Expand description

Fluent builder constructing a request to DeriveSharedSecret.

Derives a shared secret using a key agreement algorithm.

You must use an asymmetric NIST-recommended elliptic curve (ECC) or SM2 (China Regions only) KMS key pair with a KeyUsage value of KEY_AGREEMENT to call DeriveSharedSecret.

DeriveSharedSecret uses the Elliptic Curve Cryptography Cofactor Diffie-Hellman Primitive (ECDH) to establish a key agreement between two peers by deriving a shared secret from their elliptic curve public-private key pairs. You can use the raw shared secret that DeriveSharedSecret returns to derive a symmetric key that can encrypt and decrypt data that is sent between the two peers, or that can generate and verify HMACs. KMS recommends that you follow NIST recommendations for key derivation when using the raw shared secret to derive a symmetric key.

The following workflow demonstrates how to establish key agreement over an insecure communication channel using DeriveSharedSecret.

  1. Alice calls CreateKey to create an asymmetric KMS key pair with a KeyUsage value of KEY_AGREEMENT.

    The asymmetric KMS key must use a NIST-recommended elliptic curve (ECC) or SM2 (China Regions only) key spec.

  2. Bob creates an elliptic curve key pair.

    Bob can call CreateKey to create an asymmetric KMS key pair or generate a key pair outside of KMS. Bob's key pair must use the same NIST-recommended elliptic curve (ECC) or SM2 (China Regions ony) curve as Alice.

  3. Alice and Bob exchange their public keys through an insecure communication channel (like the internet).

    Use GetPublicKey to download the public key of your asymmetric KMS key pair.

    KMS strongly recommends verifying that the public key you receive came from the expected party before using it to derive a shared secret.

  4. Alice calls DeriveSharedSecret.

    KMS uses the private key from the KMS key pair generated in Step 1, Bob's public key, and the Elliptic Curve Cryptography Cofactor Diffie-Hellman Primitive to derive the shared secret. The private key in your KMS key pair never leaves KMS unencrypted. DeriveSharedSecret returns the raw shared secret.

  5. Bob uses the Elliptic Curve Cryptography Cofactor Diffie-Hellman Primitive to calculate the same raw secret using his private key and Alice's public key.

To derive a shared secret you must provide a key agreement algorithm, the private key of the caller's asymmetric NIST-recommended elliptic curve or SM2 (China Regions only) KMS key pair, and the public key from your peer's NIST-recommended elliptic curve or SM2 (China Regions only) key pair. The public key can be from another asymmetric KMS key pair or from a key pair generated outside of KMS, but both key pairs must be on the same elliptic curve.

The KMS key that you use for this operation must be in a compatible key state. For details, see Key states of KMS keys in the Key Management Service Developer Guide.

Cross-account use: Yes. To perform this operation with a KMS key in a different Amazon Web Services account, specify the key ARN or alias ARN in the value of the KeyId parameter.

Required permissions: kms:DeriveSharedSecret (key policy)

Related operations:

  • CreateKey

  • GetPublicKey

  • DescribeKey

Eventual consistency: The KMS API follows an eventual consistency model. For more information, see KMS eventual consistency.

Implementations§

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impl DeriveSharedSecretFluentBuilder

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pub fn as_input(&self) -> &DeriveSharedSecretInputBuilder

Access the DeriveSharedSecret as a reference.

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pub async fn send( self, ) -> Result<DeriveSharedSecretOutput, SdkError<DeriveSharedSecretError, HttpResponse>>

Sends the request and returns the response.

If an error occurs, an SdkError will be returned with additional details that can be matched against.

By default, any retryable failures will be retried twice. Retry behavior is configurable with the RetryConfig, which can be set when configuring the client.

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pub fn customize( self, ) -> CustomizableOperation<DeriveSharedSecretOutput, DeriveSharedSecretError, Self>

Consumes this builder, creating a customizable operation that can be modified before being sent.

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pub fn key_id(self, input: impl Into<String>) -> Self

Identifies an asymmetric NIST-recommended ECC or SM2 (China Regions only) KMS key. KMS uses the private key in the specified key pair to derive the shared secret. The key usage of the KMS key must be KEY_AGREEMENT. To find the KeyUsage of a KMS key, use the DescribeKey operation.

To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a KMS key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

For example:

  • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

  • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • Alias name: alias/ExampleAlias

  • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

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pub fn set_key_id(self, input: Option<String>) -> Self

Identifies an asymmetric NIST-recommended ECC or SM2 (China Regions only) KMS key. KMS uses the private key in the specified key pair to derive the shared secret. The key usage of the KMS key must be KEY_AGREEMENT. To find the KeyUsage of a KMS key, use the DescribeKey operation.

To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a KMS key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

For example:

  • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

  • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • Alias name: alias/ExampleAlias

  • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

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pub fn get_key_id(&self) -> &Option<String>

Identifies an asymmetric NIST-recommended ECC or SM2 (China Regions only) KMS key. KMS uses the private key in the specified key pair to derive the shared secret. The key usage of the KMS key must be KEY_AGREEMENT. To find the KeyUsage of a KMS key, use the DescribeKey operation.

To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a KMS key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

For example:

  • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

  • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • Alias name: alias/ExampleAlias

  • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

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pub fn key_agreement_algorithm(self, input: KeyAgreementAlgorithmSpec) -> Self

Specifies the key agreement algorithm used to derive the shared secret. The only valid value is ECDH.

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pub fn set_key_agreement_algorithm( self, input: Option<KeyAgreementAlgorithmSpec>, ) -> Self

Specifies the key agreement algorithm used to derive the shared secret. The only valid value is ECDH.

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pub fn get_key_agreement_algorithm(&self) -> &Option<KeyAgreementAlgorithmSpec>

Specifies the key agreement algorithm used to derive the shared secret. The only valid value is ECDH.

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pub fn public_key(self, input: Blob) -> Self

Specifies the public key in your peer's NIST-recommended elliptic curve (ECC) or SM2 (China Regions only) key pair.

The public key must be a DER-encoded X.509 public key, also known as SubjectPublicKeyInfo (SPKI), as defined in RFC 5280.

GetPublicKey returns the public key of an asymmetric KMS key pair in the required DER-encoded format.

If you use Amazon Web Services CLI version 1, you must provide the DER-encoded X.509 public key in a file. Otherwise, the Amazon Web Services CLI Base64-encodes the public key a second time, resulting in a ValidationException.

You can specify the public key as binary data in a file using fileb (fileb://) or in-line using a Base64 encoded string.

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pub fn set_public_key(self, input: Option<Blob>) -> Self

Specifies the public key in your peer's NIST-recommended elliptic curve (ECC) or SM2 (China Regions only) key pair.

The public key must be a DER-encoded X.509 public key, also known as SubjectPublicKeyInfo (SPKI), as defined in RFC 5280.

GetPublicKey returns the public key of an asymmetric KMS key pair in the required DER-encoded format.

If you use Amazon Web Services CLI version 1, you must provide the DER-encoded X.509 public key in a file. Otherwise, the Amazon Web Services CLI Base64-encodes the public key a second time, resulting in a ValidationException.

You can specify the public key as binary data in a file using fileb (fileb://) or in-line using a Base64 encoded string.

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pub fn get_public_key(&self) -> &Option<Blob>

Specifies the public key in your peer's NIST-recommended elliptic curve (ECC) or SM2 (China Regions only) key pair.

The public key must be a DER-encoded X.509 public key, also known as SubjectPublicKeyInfo (SPKI), as defined in RFC 5280.

GetPublicKey returns the public key of an asymmetric KMS key pair in the required DER-encoded format.

If you use Amazon Web Services CLI version 1, you must provide the DER-encoded X.509 public key in a file. Otherwise, the Amazon Web Services CLI Base64-encodes the public key a second time, resulting in a ValidationException.

You can specify the public key as binary data in a file using fileb (fileb://) or in-line using a Base64 encoded string.

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pub fn grant_tokens(self, input: impl Into<String>) -> Self

Appends an item to GrantTokens.

To override the contents of this collection use set_grant_tokens.

A list of grant tokens.

Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved eventual consistency. For more information, see Grant token and Using a grant token in the Key Management Service Developer Guide.

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pub fn set_grant_tokens(self, input: Option<Vec<String>>) -> Self

A list of grant tokens.

Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved eventual consistency. For more information, see Grant token and Using a grant token in the Key Management Service Developer Guide.

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pub fn get_grant_tokens(&self) -> &Option<Vec<String>>

A list of grant tokens.

Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved eventual consistency. For more information, see Grant token and Using a grant token in the Key Management Service Developer Guide.

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pub fn dry_run(self, input: bool) -> Self

Checks if your request will succeed. DryRun is an optional parameter.

To learn more about how to use this parameter, see Testing your KMS API calls in the Key Management Service Developer Guide.

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pub fn set_dry_run(self, input: Option<bool>) -> Self

Checks if your request will succeed. DryRun is an optional parameter.

To learn more about how to use this parameter, see Testing your KMS API calls in the Key Management Service Developer Guide.

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pub fn get_dry_run(&self) -> &Option<bool>

Checks if your request will succeed. DryRun is an optional parameter.

To learn more about how to use this parameter, see Testing your KMS API calls in the Key Management Service Developer Guide.

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pub fn recipient(self, input: RecipientInfo) -> Self

A signed attestation document from an Amazon Web Services Nitro enclave and the encryption algorithm to use with the enclave's public key. The only valid encryption algorithm is RSAES_OAEP_SHA_256.

This parameter only supports attestation documents for Amazon Web Services Nitro Enclaves. To call DeriveSharedSecret for an Amazon Web Services Nitro Enclaves, use the Amazon Web Services Nitro Enclaves SDK to generate the attestation document and then use the Recipient parameter from any Amazon Web Services SDK to provide the attestation document for the enclave.

When you use this parameter, instead of returning a plaintext copy of the shared secret, KMS encrypts the plaintext shared secret under the public key in the attestation document, and returns the resulting ciphertext in the CiphertextForRecipient field in the response. This ciphertext can be decrypted only with the private key in the enclave. The CiphertextBlob field in the response contains the encrypted shared secret derived from the KMS key specified by the KeyId parameter and public key specified by the PublicKey parameter. The SharedSecret field in the response is null or empty.

For information about the interaction between KMS and Amazon Web Services Nitro Enclaves, see How Amazon Web Services Nitro Enclaves uses KMS in the Key Management Service Developer Guide.

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pub fn set_recipient(self, input: Option<RecipientInfo>) -> Self

A signed attestation document from an Amazon Web Services Nitro enclave and the encryption algorithm to use with the enclave's public key. The only valid encryption algorithm is RSAES_OAEP_SHA_256.

This parameter only supports attestation documents for Amazon Web Services Nitro Enclaves. To call DeriveSharedSecret for an Amazon Web Services Nitro Enclaves, use the Amazon Web Services Nitro Enclaves SDK to generate the attestation document and then use the Recipient parameter from any Amazon Web Services SDK to provide the attestation document for the enclave.

When you use this parameter, instead of returning a plaintext copy of the shared secret, KMS encrypts the plaintext shared secret under the public key in the attestation document, and returns the resulting ciphertext in the CiphertextForRecipient field in the response. This ciphertext can be decrypted only with the private key in the enclave. The CiphertextBlob field in the response contains the encrypted shared secret derived from the KMS key specified by the KeyId parameter and public key specified by the PublicKey parameter. The SharedSecret field in the response is null or empty.

For information about the interaction between KMS and Amazon Web Services Nitro Enclaves, see How Amazon Web Services Nitro Enclaves uses KMS in the Key Management Service Developer Guide.

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pub fn get_recipient(&self) -> &Option<RecipientInfo>

A signed attestation document from an Amazon Web Services Nitro enclave and the encryption algorithm to use with the enclave's public key. The only valid encryption algorithm is RSAES_OAEP_SHA_256.

This parameter only supports attestation documents for Amazon Web Services Nitro Enclaves. To call DeriveSharedSecret for an Amazon Web Services Nitro Enclaves, use the Amazon Web Services Nitro Enclaves SDK to generate the attestation document and then use the Recipient parameter from any Amazon Web Services SDK to provide the attestation document for the enclave.

When you use this parameter, instead of returning a plaintext copy of the shared secret, KMS encrypts the plaintext shared secret under the public key in the attestation document, and returns the resulting ciphertext in the CiphertextForRecipient field in the response. This ciphertext can be decrypted only with the private key in the enclave. The CiphertextBlob field in the response contains the encrypted shared secret derived from the KMS key specified by the KeyId parameter and public key specified by the PublicKey parameter. The SharedSecret field in the response is null or empty.

For information about the interaction between KMS and Amazon Web Services Nitro Enclaves, see How Amazon Web Services Nitro Enclaves uses KMS in the Key Management Service Developer Guide.

Trait Implementations§

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impl Clone for DeriveSharedSecretFluentBuilder

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fn clone(&self) -> DeriveSharedSecretFluentBuilder

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DeriveSharedSecretFluentBuilder

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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👎Deprecated since 1.0.1: renamed to resetting() due to conflicts with Vec::clear(). The clear() method will be removed in a future release.

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