import { WitnessEqualityMetaStatement } from '../composite-proof';
import { SetupParamsTracker } from './setup-params-tracker';
import { AttributeEquality, AttributeRef, CredentialVerificationParam, FlattenedSchema, PredicateParamType, PublicKey, Signature, SignatureParams, SignatureParamsClass } from './types-and-consts';
export declare function isValueDate(value: string): boolean;
export declare function isValueDateTime(value: string): boolean;
export declare function flattenTill2ndLastKey(obj: object): [string[], object[]];
/**
 * flatten till 2nd last key where the last key is an array of un-nested object
 * @param obj
 */
export declare function flattenPredicatesInSpec(obj: object): [string[], object[][]];
export declare function createWitEq(eql: AttributeEquality, flattenedSchemas: FlattenedSchema[]): [WitnessEqualityMetaStatement, number[]];
export declare function createWitEqForBlindedCred(statementIdx: number, attrIdx: number, attrRefs: AttributeRef[], flattenedSchemas: FlattenedSchema[]): WitnessEqualityMetaStatement;
export declare function paramsClassBySignature(signature: Signature): SignatureParamsClass | null;
export declare function paramsClassByPublicKey(pk: PublicKey): SignatureParamsClass | null;
export declare function buildSignatureVerifierStatementFromParamsRef(setupParamsTrk: SetupParamsTracker, sigParams: SignatureParams, messageCount: number, revealedMessages: Map<number, Uint8Array>, credVerParam?: CredentialVerificationParam, useConstantTimeEncoding?: boolean): Uint8Array;
export declare function buildSignatureProverStatementFromParamsRef(setupParamsTrk: SetupParamsTracker, sigParams: SignatureParams, messageCount: number, revealedMessages: Map<number, Uint8Array>, pk?: PublicKey, useConstantTimeEncoding?: boolean): Uint8Array;
/**
 * Returns default label bytes for the signature params class (if any).
 * @param signatureParamsClass
 * @returns
 */
export declare function getDefaultLabelBytesForSignatureParams(signatureParamsClass: SignatureParamsClass): Uint8Array | null;
export declare function buildWitness(signature: Signature, unrevealedMessages: Map<number, Uint8Array>): Uint8Array;
/**
 * Returns signature params adapted for the provided message count reusing them from the provided map. Acts as a cache lookup
 * and can update the cache.
 * @param sigParamsByScheme - The cache of signature params
 * @param paramsClass
 * @param msgCount
 */
export declare const getSignatureParamsForMsgCount: (sigParamsByScheme: Map<SignatureParamsClass, {
    params: SignatureParams;
    msgCount: number;
}>, paramsClass: SignatureParamsClass, msgCount: number) => SignatureParams;
export declare function saverStatement(forProver: boolean, chunkBitSize: number, commKeyId: string, encKeyId: string, snarkKeyId: string, commKeys: PredicateParamType, encKey: PredicateParamType, snarkKey: PredicateParamType, setupParamsTrk: SetupParamsTracker): Uint8Array;
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