RsaHashedKeyGenParams

RsaHashedKeyGenParams: object

The RsaHashedKeyGenParams dictionary of the Web Crypto API represents the object that should be passed as the algorithm parameter into SubtleCrypto.generateKey, when generating any RSA-based key pair: that is, when the algorithm is identified as any of RSASSA-PKCS1-v1_5, RSA-PSS, or RSA-OAEP.

Type declaration

hash

hash: string | { name: string; }

A string or an object containing a single property called name with a string value. It is an identifier for the digest algorithm to use. This should be one of the following:

• SHA-256: selects the SHA-256 algorithm.
• SHA-384: selects the SHA-384 algorithm.
• SHA-512: selects the SHA-512 algorithm.

modulusLength

modulusLength: number

A Number. The length in bits of the RSA modulus. This should be at least 2048: see for example see SP 800-131A Rev. 2. Some organizations are now recommending that it should be 4096.

name

name: string

A string. This should be set to RSASSA-PKCS1-v1_5, RSA-PSS, or RSA-OAEP, depending on the algorithm you want to use.

publicExponent

publicExponent: Uint8Array

A Uint8Array. The public exponent. Unless you have a good reason to use something else, specify 65537 here ([0x01, 0x00, 0x01]).

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Last updated: Sep 30, 2025