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Added in API level 1

Summary: Constants | Inherited Constants | Methods | Inherited Methods

RSAPublicKey

public interface RSAPublicKey
implements PublicKey, RSAKey

java.security.interfaces.RSAPublicKey

The interface to an RSA public key.

Summary

Constants
`long`	`serialVersionUID` This constant was deprecated in API level 35. A `serialVersionUID` field in an interface is ineffectual. Do not use; no replacement.

Inherited constants

From interface java.security.PublicKey

long

serialVersionUID

This constant was deprecated in API level 34. A serialVersionUID field in an interface is ineffectual. Do not use; no replacement.

From interface java.security.Key

long

serialVersionUID

This constant was deprecated in API level 34. A serialVersionUID field in an interface is ineffectual. Do not use; no replacement.

Public methods
`abstract BigInteger`	`getPublicExponent()` Returns the public exponent.

Inherited methods

From interface


        
          java.security.interfaces.RSAKey

`abstract BigInteger`	`getModulus()` Returns the modulus.
`default AlgorithmParameterSpec`	`getParams()` Returns the parameters associated with this key.

From interface


        
          java.security.Key

`abstract String`	`getAlgorithm()` Returns the standard algorithm name for this key.
`abstract byte[]`	`getEncoded()` Returns the key in its primary encoding format, or null if this key does not support encoding.
`abstract String`	`getFormat()` Returns the name of the primary encoding format of this key, or null if this key does not support encoding.

Constants

serialVersionUID

Added in API level 1
Deprecated in API level 35

public static final long serialVersionUID

This constant was deprecated in API level 35.
A serialVersionUID field in an interface is ineffectual. Do not use; no replacement.

The type fingerprint that is set to indicate serialization compatibility with a previous version of the type.

Constant Value: -8727434096241101194 (0x86e1ecedeceab676)

Public methods

getPublicExponent

Added in API level 1

public abstract BigInteger getPublicExponent ()

Returns the public exponent.

Returns
`BigInteger`	the public exponent

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Last updated 2026-08-03 UTC.

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