Using memory as a block in a block chain

1. An apparatus, comprising:

a memory; and

circuitry configured to:

generate a block in a block chain for validating data stored in the memory, wherein:

the block includes:

a cryptographic hash of a previous block in the block chain; and

a cryptographic hash of the data stored in the memory; and

the block has a digital signature associated therewith that indicates the block is included in the block chain; and

send the block to a host for validation of the data stored in the memory responsive to a powering of the memory.

2. The apparatus of claim 1 , wherein the circuitry is configured to store the block in the memory.

3. The apparatus of claim 1 , wherein the circuitry is configured to generate the digital signature.

4. The apparatus of claim 1 , wherein:

the memory comprises an array of memory cells; and

the circuitry includes a pair of registers configured to define the array.

5. The apparatus of claim 4 , wherein the pair of registers includes:

a register configured to define an address of the array; and

a register configured to define a size of the array.

6. The apparatus of claim 4 , wherein the circuitry is configured to generate a cryptographic hash associated with the array.

7. The apparatus of claim 1 , wherein the circuitry is configured to generate the cryptographic hash of the data stored in the memory.

8. A method of operating memory, comprising:

generating a block in a block chain for validating data stored in the memory, wherein:

the block includes:

a cryptographic hash of a previous block in the block chain; and

a cryptographic hash of the data stored in the memory; and

the block has a digital signature associated therewith that indicates the block is included in the block chain;

storing the block in the memory; and

sending the block to a host for validation of the data stored in the memory responsive to a powering of the memory.

9. The method of claim 8 , wherein the method includes sending the block to the host responsive to receipt of a command from the host.

10. The method of claim 8 , wherein the block is stored in a portion of the memory that is inaccessible to a user of the memory.

11. The method of claim 8 , wherein the method includes, after the validation of the data stored in the memory, generating an additional block in the block chain, wherein the additional block includes:

an additional cryptographic hash of the previous block in the block chain, wherein the additional cryptographic hash of the previous block in the block chain is the cryptographic hash of the data stored in the memory; and

an additional cryptographic hash of the data stored in the memory.

12. The method of claim 11 , wherein the method includes storing the additional block in the memory.

13. A method of operating memory, comprising:

receiving, by a host from the memory responsive to a powering of the memory, a block in a block chain for validation of data stored in the memory, wherein:

the block includes:

a cryptographic hash of a previous block in the block chain; and

a cryptographic hash of the data stored in the memory; and

the block has a digital signature associated therewith that indicates the block is included in the block chain; and

validating, by the host, the data stored in the memory using the received block.

14. The method of claim 13 , wherein the cryptographic hash of the data stored in the memory comprises a SHA-256 cryptographic hash.

15. The method of claim 13 , wherein:

the cryptographic hash of the previous block in the block chain comprises 256 bytes of data; and

the cryptographic hash of the data stored in the memory comprises 256 bytes of data.

16. The method of claim 13 , wherein the method includes validating, by the host, the digital signature to determine the block is included in the block chain.

17. The method of claim 13 , wherein the block includes a header having a timestamp.

18. The method of claim 13 , wherein the method includes:

receiving, by the host from the memory, a cryptographic hash associated with an array of the memory; and

validating, by the host, the data stored in the memory using the cryptographic hash associated with the array.

19. A system, comprising:

a memory, wherein the memory includes a block in a block chain for validating data stored in the memory, wherein:

the block includes:

a cryptographic hash of a previous block in the block chain; and

a cryptographic hash of the data stored in the memory; and

the block has a digital signature associated therewith that indicates the block is included in the block chain; and

a host, wherein the host is configured to:

receive, responsive to a powering of the memory, the block from the memory for validation of the data stored in the memory; and

validate the data stored in the memory using the received block.

20. The system of claim 19 , wherein:

the host is configured to send, to the memory, a command to sense the block; and

the memory is configured to execute the command to sense the block.

21. The system of claim 19 , wherein the host is configured to:

generate the cryptographic hash of the data stored in the memory; and

send the generated cryptographic hash of the data stored in the memory to the memory.

22. The system of claim 19 , wherein the host is configured to:

generate the digital signature associated with the block; and

send the generated digital signature to the memory.