frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare > Interface Template Reference

Defines a way to encrypt and decrypt information. More...

Inheritance diagram for frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >:

Classes
interface	PublicKeyShare
	One share of the overall public key. More...

Public Member Functions
K	newPublicKeyShare ()
void	addPublicKeyShare (K share)
	Records another share of the public key.
E	encrypt (C cleartext)
	Encrypts a cleartext.
E	encrypt (C cleartext, C bound)
	Encrypts a cleartext.
E	reencrypt (E cyphertext)
	Re-encrypts a cyphertext.
E	partialDecrypt (E initialCypherText, E partialDecryption)
	Partially decrypts a cyphertext.
C	decrypt (E initialCypherText, E partialDecryption)
	Decrypts a cyphertext.

Detailed Description

Defines a way to encrypt and decrypt information.

Author

Thomas Leaute

Parameters

<C>	the type of cleartext information
<E>	the type of encrypted information
<K>	the class used for public key shares

Member Function Documentation

addPublicKeyShare()

void frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >.addPublicKeyShare

(

K

share

)

Records another share of the public key.

Parameters

share

another share of the public key

decrypt()

C frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >.decrypt	(	E	initialCypherText,
		E	partialDecryption )

Decrypts a cyphertext.

Parameters

initialCypherText	the initial cyphertext
partialDecryption	the partially decrypted cyphertext (null if this is the first decryption)

Returns

a decryption of the cyphertext

encrypt() [1/2]

E frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >.encrypt

(

C

cleartext

)

Encrypts a cleartext.

Parameters

cleartext

the cleartext

Returns

an encryption of the cleartext

Referenced by frodo2.algorithms.dpop.privacy.SecureRerooting< C extends Addable< C >, E extends AddableLimited< C, E >.VariableInfo.createVector().

encrypt() [2/2]

E frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >.encrypt	(	C	cleartext,
		C	bound )

Encrypts a cleartext.

Parameters

cleartext	the cleartext
bound	bound used to limit the number of values allowed for a cleartext

Returns

an encryption of the cleartext

newPublicKeyShare()

K frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >.newPublicKeyShare

(

)

Returns

a new share of the public key

Implemented in frodo2.algorithms.dpop.privacy.test.FakeCryptoScheme.

partialDecrypt()

E frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >.partialDecrypt	(	E	initialCypherText,
		E	partialDecryption )

Partially decrypts a cyphertext.

Parameters

initialCypherText	the initial cyphertext
partialDecryption	the partially decrypted cyphertext (null if this is the first decryption)

Returns

a partial decryption of the cyphertext

reencrypt()

E frodo2.solutionSpaces.crypto.CryptoScheme< C extends Serializable, E extends Serializable, K extends CryptoScheme.PublicKeyShare >.reencrypt

(

E

cyphertext

)

Re-encrypts a cyphertext.

Parameters

cyphertext

the cyphertext

Returns

a re-encryption of the cyphertext

Warning

Re-encrypting with the same key as before must not mean we then need to decrypt twice!

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The documentation for this interface was generated from the following file:

• src/frodo2/solutionSpaces/crypto/CryptoScheme.java