| 1 | import { AwsCredentialIdentity, ChecksumConstructor, HashConstructor } from "@aws-sdk/types";
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| 2 | /**
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| 3 | * Create a string describing the scope of credentials used to sign a request.
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| 4 | *
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| 5 | * @param shortDate The current calendar date in the form YYYYMMDD.
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| 6 | * @param region The AWS region in which the service resides.
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| 7 | * @param service The service to which the signed request is being sent.
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| 8 | */
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| 9 | export declare const createScope: (shortDate: string, region: string, service: string) => string;
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| 10 | /**
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| 11 | * Derive a signing key from its composite parts
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| 12 | *
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| 13 | * @param sha256Constructor A constructor function that can instantiate SHA-256
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| 14 | * hash objects.
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| 15 | * @param credentials The credentials with which the request will be
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| 16 | * signed.
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| 17 | * @param shortDate The current calendar date in the form YYYYMMDD.
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| 18 | * @param region The AWS region in which the service resides.
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| 19 | * @param service The service to which the signed request is being
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| 20 | * sent.
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| 21 | */
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| 22 | export declare const getSigningKey: (sha256Constructor: ChecksumConstructor | HashConstructor, credentials: AwsCredentialIdentity, shortDate: string, region: string, service: string) => Promise<Uint8Array>;
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| 23 | /**
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| 24 | * @internal
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| 25 | */
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| 26 | export declare const clearCredentialCache: () => void;
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