java.lang.Object
- com.intel.crypto.PlatformSeed

```
public final class PlatformSeed
extends java.lang.Object
```
This class provides a random unique per platform seed generated by Intel^® CSE that can be used to seed cryptographic keys.
This seed is guaranteed to be unique per platform.
This seed is persistent, the same value is retained across Intel CSE firmware re-flash and update, Intel CSE un-configure, power cycles.

Method Summary

Methods
Modifier and Type	Method and Description
`static void`	`disableBiosRetrieve()` Disables the seed's exposure to the BIOS (burns fuse). Supported in Intel TXE 3.x, not supported in Intel CSME
`static boolean`	`isReadableByBios()` Checks whether the seed is exposed to BIOS. Supported in Intel TXE 3.x only, not supported in Intel CSME
`static byte[]`	`retrieveUniqueSeed()` Retrieves the random platform 64-byte seed. Supported in Intel TXE 3.x only, not supported in Intel CSME
`static byte[]`	`retrieveUniqueSeedByCurrSvn()` Retrieves the random platform 64-byte seed corresponding to the current SVN. Supported in Intel TXE 3.0 and later, and Intel CSME 13.0 and later
`static byte[]`	`retrieveUniqueSeedByPrevSvn()` Retrieves the previous random platform 64-byte seed corresponding to the previous SVN. Supported in Intel TXE 3.0 and later, and Intel CSME 13.0 and later

Methods inherited from class java.lang.Object
equals, getClass, hashCode, toString

- Method Detail
  - retrieveUniqueSeed
```
public static final byte[] retrieveUniqueSeed()
                                       throws CryptoException
```
    Retrieves the random platform 64-byte seed. Supported in Intel TXE 3.x only, not supported in Intel CSME
    
    Returns:
    the unique platform seed (64 bytes)
    
    Throws:
    
    CryptoException - in case of internal error.
  - retrieveUniqueSeedByCurrSvn
```
public static final byte[] retrieveUniqueSeedByCurrSvn()
                                                throws CryptoException
```
    Retrieves the random platform 64-byte seed corresponding to the current SVN. Supported in Intel TXE 3.0 and later, and Intel CSME 13.0 and later
    
    Returns:
    the unique platform seed (64 bytes)
    
    Throws:
    
    CryptoException - in case of internal error.
  - retrieveUniqueSeedByPrevSvn
```
public static final byte[] retrieveUniqueSeedByPrevSvn()
                                                throws CryptoException
```
    Retrieves the previous random platform 64-byte seed corresponding to the previous SVN. Supported in Intel TXE 3.0 and later, and Intel CSME 13.0 and later
    
    Returns:
    the previous unique platform seed (64 bytes)
    
    Throws:
    
    CryptoException - in case of internal error.
  - isReadableByBios
```
public static final boolean isReadableByBios()
                                      throws CryptoException
```
    Checks whether the seed is exposed to BIOS. Supported in Intel TXE 3.x only, not supported in Intel CSME
    
    Returns:
    true if seed is exposed to the BIOS, false if not
    
    Throws:
    
    CryptoException - in case of internal error (if fuse can't be read).
  - disableBiosRetrieve
```
public static final void disableBiosRetrieve()
                                      throws CryptoException
```
    Disables the seed's exposure to BIOS (burns fuse). This operation burns an FPF, is irreversible, and can be executed once. Subsequent invocations have no effect. Supported in Intel TXE 3.x, not supported in Intel CSME.
    
    Throws:
    
    CryptoException - in case of internal error (if fuse cannot be read or written).

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Intel

PlatformSeed

Class PlatformSeed

Method Summary

Methods inherited from class java.lang.Object

Method Detail

retrieveUniqueSeed

retrieveUniqueSeedByCurrSvn

retrieveUniqueSeedByPrevSvn

isReadableByBios

disableBiosRetrieve