PredefinedSignatureParameters

java.lang.Object
- com.google.crypto.tink.signature.PredefinedSignatureParameters

```
public final class PredefinedSignatureParameters
extends Object
```
Pre-generated Parameter objects for PublicKeySign and PublicKeyVerify. keys.
Note: if you want to keep dependencies small, consider inlining the constants here.

Field Summary

Fields
Modifier and Type	Field and Description
`static EcdsaParameters`	`ECDSA_P256` A `Parameters` object that generates new instances of `EcdsaPrivateKey` objects with the following parameters: Hash function: SHA256 Curve: NIST P-256 Signature encoding: DER (this is the encoding that Java uses).
`static EcdsaParameters`	`ECDSA_P256_IEEE_P1363` A `Parameters` that generates new instances of `EcdsaPrivateKey` objects with the following parameters: Hash function: SHA256 Curve: NIST P-256 Signature encoding: IEEE_P1363 (this is the encoding that JWS and WebCrypto use).
`static EcdsaParameters`	`ECDSA_P256_IEEE_P1363_WITHOUT_PREFIX` A `Parameters` that generates new instances of `EcdsaPrivateKey` objects with the following parameters: Hash function: SHA256 Curve: NIST P-256 Signature encoding: DER (this is the encoding that Java uses).
`static EcdsaParameters`	`ECDSA_P384` A `Parameters` that generates new instances of `EcdsaPrivateKey` objects with the following parameters: Hash function: SHA512 Curve: NIST P-384 Signature encoding: DER (this is the encoding that Java uses).
`static EcdsaParameters`	`ECDSA_P384_IEEE_P1363` A `Parameters` that generates new instances of `EcdsaPrivateKey` objects with the following parameters: Hash function: SHA512 Curve: NIST P-384 Signature encoding: IEEE_P1363 (this is the encoding that JWS and WebCrypto use).
`static EcdsaParameters`	`ECDSA_P521` A `Parameters` that generates new instances of `EcdsaPrivateKey` objects with the following parameters: Hash function: SHA512 Curve: NIST P-521 Signature encoding: DER (this is the encoding that Java uses).
`static EcdsaParameters`	`ECDSA_P521_IEEE_P1363` A `Parameters` that generates new instances of `EcdsaPrivateKey` objects with the following parameters: Hash function: SHA512 Curve: NIST P-521 Signature encoding: IEEE_P1363 (this is the encoding that JWS and WebCrypto use).
`static Ed25519Parameters`	`ED25519` A `Parameters` that generates new instances of `Ed25519PrivateKey` objects.
`static Ed25519Parameters`	`ED25519WithRawOutput` A `Parameters` that generates new instances of `ED25519PrivateKey`.
`static RsaSsaPkcs1Parameters`	`RSA_SSA_PKCS1_3072_SHA256_F4` A `Parameters` that generates new instances of `RsaSsaPkcs1PrivateKey` objects with the following parameters: Hash function: SHA256.
`static RsaSsaPkcs1Parameters`	`RSA_SSA_PKCS1_3072_SHA256_F4_WITHOUT_PREFIX` A `Parameters` that generates new instances of `RsaSsaPkcs1PrivateKey` objects with the following parameters: Hash function: SHA256.
`static RsaSsaPkcs1Parameters`	`RSA_SSA_PKCS1_4096_SHA512_F4` A `Parameters` that generates new instances of `RsaSsaPkcs1PrivateKey` objects with the following parameters: Hash function: SHA512.
`static RsaSsaPssParameters`	`RSA_SSA_PSS_3072_SHA256_SHA256_32_F4` A `Parameters` that generates new instances of `RsaSsaPssPrivateKey` objects with the following parameters: Signature hash: SHA256.
`static RsaSsaPssParameters`	`RSA_SSA_PSS_4096_SHA512_SHA512_64_F4` A `Parameters` that generates new instances of `RsaSsaPssPrivateKey` objects with the following parameters: Signature hash: SHA512.

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - ECDSA_P256
```
public static final EcdsaParameters ECDSA_P256
```
    A Parameters object that generates new instances of EcdsaPrivateKey objects with the following parameters:
    - Hash function: SHA256
    - Curve: NIST P-256
    - Signature encoding: DER (this is the encoding that Java uses).
    - Prefix type: OutputPrefixType.TINK
  - ECDSA_P384
```
public static final EcdsaParameters ECDSA_P384
```
    A Parameters that generates new instances of EcdsaPrivateKey objects with the following parameters:
    - Hash function: SHA512
    - Curve: NIST P-384
    - Signature encoding: DER (this is the encoding that Java uses).
    - Prefix type: OutputPrefixType.TINK
  - ECDSA_P521
```
public static final EcdsaParameters ECDSA_P521
```
    A Parameters that generates new instances of EcdsaPrivateKey objects with the following parameters:
    - Hash function: SHA512
    - Curve: NIST P-521
    - Signature encoding: DER (this is the encoding that Java uses).
    - Prefix type: OutputPrefixType.TINK
  - ECDSA_P256_IEEE_P1363
```
public static final EcdsaParameters ECDSA_P256_IEEE_P1363
```
    A Parameters that generates new instances of EcdsaPrivateKey objects with the following parameters:
    - Hash function: SHA256
    - Curve: NIST P-256
    - Signature encoding: IEEE_P1363 (this is the encoding that JWS and WebCrypto use).
    - Prefix type: OutputPrefixType.TINK
  - ECDSA_P384_IEEE_P1363
```
public static final EcdsaParameters ECDSA_P384_IEEE_P1363
```
    A Parameters that generates new instances of EcdsaPrivateKey objects with the following parameters:
    - Hash function: SHA512
    - Curve: NIST P-384
    - Signature encoding: IEEE_P1363 (this is the encoding that JWS and WebCrypto use).
    - Prefix type: OutputPrefixType.TINK
  - ECDSA_P256_IEEE_P1363_WITHOUT_PREFIX
```
public static final EcdsaParameters ECDSA_P256_IEEE_P1363_WITHOUT_PREFIX
```
    A Parameters that generates new instances of EcdsaPrivateKey objects with the following parameters:
    - Hash function: SHA256
    - Curve: NIST P-256
    - Signature encoding: DER (this is the encoding that Java uses).
    - Prefix type: None
    The digital signature generated by this key would be 64 bytes exactly.
  - ECDSA_P521_IEEE_P1363
```
public static final EcdsaParameters ECDSA_P521_IEEE_P1363
```
    A Parameters that generates new instances of EcdsaPrivateKey objects with the following parameters:
    - Hash function: SHA512
    - Curve: NIST P-521
    - Signature encoding: IEEE_P1363 (this is the encoding that JWS and WebCrypto use).
    - Prefix type: OutputPrefixType.TINK
  - ED25519
```
public static final Ed25519Parameters ED25519
```
    A Parameters that generates new instances of Ed25519PrivateKey objects.
    
    Since:
    
    1.1.0
  - ED25519WithRawOutput
```
public static final Ed25519Parameters ED25519WithRawOutput
```
    A Parameters that generates new instances of ED25519PrivateKey.
    The difference between ED25519WithRawOutput and ED25519 is the format of signatures generated. ED25519WithRawOutput generates signatures of OutputPrefixType.RAW format, which is 64 bytes long.
    
    Since:
    
    1.3.0
  - RSA_SSA_PKCS1_3072_SHA256_F4
```
public static final RsaSsaPkcs1Parameters RSA_SSA_PKCS1_3072_SHA256_F4
```
    A Parameters that generates new instances of RsaSsaPkcs1PrivateKey objects with the following parameters:
    - Hash function: SHA256.
    - Modulus size: 3072 bit.
    - Public exponent: 65537 (aka F4).
    - Prefix type: OutputPrefixType.TINK
  - RSA_SSA_PKCS1_3072_SHA256_F4_WITHOUT_PREFIX
```
public static final RsaSsaPkcs1Parameters RSA_SSA_PKCS1_3072_SHA256_F4_WITHOUT_PREFIX
```
    A Parameters that generates new instances of RsaSsaPkcs1PrivateKey objects with the following parameters:
    - Hash function: SHA256.
    - Modulus size: 3072 bit.
    - Public exponent: 65537 (aka F4).
    - Prefix type: None
  - RSA_SSA_PKCS1_4096_SHA512_F4
```
public static final RsaSsaPkcs1Parameters RSA_SSA_PKCS1_4096_SHA512_F4
```
    A Parameters that generates new instances of RsaSsaPkcs1PrivateKey objects with the following parameters:
    - Hash function: SHA512.
    - Modulus size: 4096 bit.
    - Public exponent: 65537 (aka F4).
    - Prefix type: OutputPrefixType.TINK
  - RSA_SSA_PSS_3072_SHA256_SHA256_32_F4
```
public static final RsaSsaPssParameters RSA_SSA_PSS_3072_SHA256_SHA256_32_F4
```
    A Parameters that generates new instances of RsaSsaPssPrivateKey objects with the following parameters:
    - Signature hash: SHA256.
    - MGF1 hash: SHA256.
    - Salt length: 32 (i.e., SHA256's output length).
    - Modulus size: 3072 bit.
    - Public exponent: 65537 (aka F4).
  - RSA_SSA_PSS_4096_SHA512_SHA512_64_F4
```
public static final RsaSsaPssParameters RSA_SSA_PSS_4096_SHA512_SHA512_64_F4
```
    A Parameters that generates new instances of RsaSsaPssPrivateKey objects with the following parameters:
    - Signature hash: SHA512.
    - MGF1 hash: SHA512.
    - Salt length: 64 (i.e., SHA512's output length).
    - Modulus size: 4096 bit.
    - Public exponent: 65537 (aka F4).

Class PredefinedSignatureParameters

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

ECDSA_P256

ECDSA_P384

ECDSA_P521

ECDSA_P256_IEEE_P1363

ECDSA_P384_IEEE_P1363

ECDSA_P256_IEEE_P1363_WITHOUT_PREFIX

ECDSA_P521_IEEE_P1363

ED25519

ED25519WithRawOutput

RSA_SSA_PKCS1_3072_SHA256_F4

RSA_SSA_PKCS1_3072_SHA256_F4_WITHOUT_PREFIX

RSA_SSA_PKCS1_4096_SHA512_F4

RSA_SSA_PSS_3072_SHA256_SHA256_32_F4

RSA_SSA_PSS_4096_SHA512_SHA512_64_F4