export const ALGORITHM_QUERY_PARAM = "X-Amz-Algorithm";
export const CREDENTIAL_QUERY_PARAM = "X-Amz-Credential";
export const AMZ_DATE_QUERY_PARAM = "X-Amz-Date";
export const SIGNED_HEADERS_QUERY_PARAM = "X-Amz-SignedHeaders";
export const EXPIRES_QUERY_PARAM = "X-Amz-Expires";
export const SIGNATURE_QUERY_PARAM = "X-Amz-Signature";
export const TOKEN_QUERY_PARAM = "X-Amz-Security-Token";
export const REGION_SET_PARAM = "X-Amz-Region-Set";
export const AUTH_HEADER = "authorization";
export const AMZ_DATE_HEADER = AMZ_DATE_QUERY_PARAM.toLowerCase();
export const DATE_HEADER = "date";
export const GENERATED_HEADERS = [AUTH_HEADER, AMZ_DATE_HEADER, DATE_HEADER];
export const SIGNATURE_HEADER = SIGNATURE_QUERY_PARAM.toLowerCase();
export const SHA256_HEADER = "x-amz-content-sha256";
export const TOKEN_HEADER = TOKEN_QUERY_PARAM.toLowerCase();
export const HOST_HEADER = "host";
export const ALWAYS_UNSIGNABLE_HEADERS = {
    authorization: true,
    "cache-control": true,
    connection: true,
    expect: true,
    from: true,
    "keep-alive": true,
    "max-forwards": true,
    pragma: true,
    referer: true,
    te: true,
    trailer: true,
    "transfer-encoding": true,
    upgrade: true,
    "user-agent": true,
    "x-amzn-trace-id": true,
};
export const PROXY_HEADER_PATTERN = /^proxy-/;
export const SEC_HEADER_PATTERN = /^sec-/;
export const UNSIGNABLE_PATTERNS = [/^proxy-/i, /^sec-/i];
export const ALGORITHM_IDENTIFIER = "AWS4-HMAC-SHA256";
export const ALGORITHM_IDENTIFIER_V4A = "AWS4-ECDSA-P256-SHA256";
export const EVENT_ALGORITHM_IDENTIFIER = "AWS4-HMAC-SHA256-PAYLOAD";
export const UNSIGNED_PAYLOAD = "UNSIGNED-PAYLOAD";
export const MAX_CACHE_SIZE = 50;
export const KEY_TYPE_IDENTIFIER = "aws4_request";
export const MAX_PRESIGNED_TTL = 60 * 60 * 24 * 7;