CN110474780A - Quantum PGP encryption method, encryption device, decryption method and decryption device after a kind of - Google Patents
Quantum PGP encryption method, encryption device, decryption method and decryption device after a kind of Download PDFInfo
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- CN110474780A CN110474780A CN201910779811.9A CN201910779811A CN110474780A CN 110474780 A CN110474780 A CN 110474780A CN 201910779811 A CN201910779811 A CN 201910779811A CN 110474780 A CN110474780 A CN 110474780A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
- H04L9/3297—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving time stamps, e.g. generation of time stamps
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Abstract
The invention discloses a kind of rear quantum PGP encryption method, encryption device, decryption method and decryption devices, the ID of sender of the message and timestamp are attached on abstract, and signature is generated using private key and signature generating function, based on PGP realize instant messaging can not tamper, non-repudiation, it can support large-scale secure communication, have the characteristics that security level height, anti-quantum calculation, can not distort, non-repudiation.
Description
Technical field
The present invention relates to a kind of encryption method and device, in particular to it is a kind of after quantum PGP encryption method, encryption device,
Decryption method and decryption device.
Background technique
PGP (Pretty Good Privacy) is a set of for message encryption, the method for verifying, using the hash of IDEA
Algorithm is used as encryption with verifying.
PGP encryption is formed by a series of algorithm combination of hash, data compression, symmetric key encryption and public key encryption.
Each step supports several algorithms, can choose a use.Each public key binds unique user name and/or E-mail
Address.PGP can be used to send confidential information.This is combined by symmetrical one group key-public key to realize.Message uses
Symmetric encipherment algorithm encryption, using one group of symmetric key.Each symmetric key only uses once, so also referred to as session key.
Session key is by the public key of recipient come encipherment protection, therefore need to only ensure only to receive can decrypted session key.Add
The session key of close message and encryption sends jointly to recipient.
But quantum computer has been increasingly becoming the significant threat of the public key cryptographies such as RSA, and can be greatly reduced pair
Claim the safety of password.The fast development of quantum computer, the safety for encrypting PGP are greatly reduced, and hinder PGP encryption
It is widely applied.
Summary of the invention
Aiming at the problem that reduction the purpose of the present invention is the safety that the development quantum computer causes PGP to encrypt, provide
Quantum PGP encryption method, encryption device, decryption method and decryption device after a kind of.
In the embodiment of the present invention, a kind of rear quantum PGP encryption method is provided characterized by comprising
Message m is calculated using hash function HASH, generates abstract m1, m1=HASH (m)；
By the ID ID of sender of the messageAIt is attached on abstract m1 with time stamp T S, obtains m2=m1+IDA+TS；
The random private key SKa for generating sender, and public key PKa is generated based on private key, wherein private key SKa is protected by sender
Pipe, public key PKa are disclosed；
Signature s=Rainbow (SKa, m2) is generated using private key SKa and signature generating function Rainbow；
Message m is compressed using compression function PKZIP, obtains m3=PKZIP (m | s)；
Generate Message Encryption key K1With message decryption key K2；
Use Message Encryption key K1Compressed message m 3 is encrypted with message encryption function SimpleMatrix, is obtained
Encrypted message c1=SimpleMatrix (K1,m3)；
Use the public key PKa and pad function Rainbow of recipient-1To message decryption key K2Encryption, is added
Message decryption key c2=Rainbow after close-1(PKa,K2)；
C1, c2 are sent to recipient.
In the embodiment of the present invention, the process that hash function HASH calculates message m is as follows:
Message m is indicated using binary system m；
The length of the m indicated using 100...000 and 64 bits fills m, i.e. m '=pad (m)；
M is divided into the block of 512 bits, i.e. M(1),M(2),...,M(N)；
64 constants are used, and W is identified as0,W1,...,W63；
8 variables are used, i.e. A=0x6A09E667, B=0xBB67AE85, C=0x3C6EF372, D=
0xA54FF53A, E=0x510E527F, F=0x9B05688C, G=0x1F83D9AB, H=0x5BE0CD19；
Calculated result in each block based on a upper block calculates 64 wheel interative computations, last blocks of calculating knot
Fruit, that is, cryptographic Hash.
In the embodiment of the present invention, the process for generating function Rainbow calculate the signature of signing is as follows:
Generate messageSignature, calculate first
Then, it calculates
Finally, calculate the signature
In the embodiment of the present invention, a kind of rear quantum PGP encryption device is additionally provided, above-mentioned rear quantum PGP is used to add
Decryption method.
In the embodiment of the present invention, a kind of rear quantum PGP decryption method is additionally provided comprising
Message decryption key c2 is decrypted using private key SKb and key decryption function Rainbow, obtains decruption key
K2=Rainbow (SKb, c2)；
Use decruption key k2 and message decryption function SimpleMatrix-1Encrypted message c1 is decrypted, is obtained
To m3=SimpleMatrix-1(K2,c1)；
M3 is decompressed using decompression function, m | s=PKZIP-1(m3)；
Signature, m2 (m1+ID are verified using the public key PKa of senderA+ TS)=Rainbow-1(PKa,s)；
It is generated and is made a summary using hash function HASH, m1 '=HASH (m)；
M1 ', m1 are compared, is otherwise false if same signature is true.
In the embodiment of the present invention, key decryption function Rainbow is as follows using the process of private key decruption key:
It is rightIt is decrypted, calculates first
Then, it calculates
Finally, calculating in plain text
In the embodiment of the present invention, message decryption function SimpleMatrix-1Process using private key decryption message is as follows:
(1) x=S is calculated-1(w)；S ' is the matrix of m × m:
(2) y (y is calculated1,y2,...,yn)=F-1(x), E '1Indicate following matrix:
(3)E′2Indicate following matrix:
(4) if E '1It is reversible, calculates the inverse of it；
(5) it is based on B × E '1 -1×E′2- C=0, constructed variable y1,y2,...,ynSystem of linear equations；
(6) system of linear equations is solved；
(7) if E '1It is irreversible, but E '2Reversible, calculate the inverse of it；
(8) it is based on C × E '2 -1×E′1- B=0, constructed variable y1,y2,...,ynSystem of linear equations；
(9) system of linear equations is solved；
(10) if E '1、E′2All irreversible, A '=A (y) is reversible；
(11) it is based on A '-1×E′1- B=0, A '-1×E′2- C=0, constructed variable y1,y2,...,ynLinear equation
Group；
(12) system of linear equations is solved；
(13) if E '1、E′2, A '=A (y) it is all irreversible, decryption failure；
(14) plaintext z=T ' is calculated-1Y.T ' is the matrix of n × n.
In the embodiment of the present invention, a kind of rear quantum PGP decryption device is additionally provided, above-mentioned rear quantum PGP is used to solve
Decryption method.
Compared with prior art, in rear quantum PGP encryption method of the invention and encryption device, by sender of the message's
ID and timestamp are attached on abstract, and generate signature using private key and signature generating function, realize instant messaging based on PGP
Can not tamper, non-repudiation, can support large-scale secure communication, there is security level high, anti-quantum calculation, no
Can distort, non-repudiation the characteristics of.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of rear quantum PGP encryption method shown in the embodiment of the present invention.
Fig. 2 is the flow diagram of the ciphering process shown in the embodiment of the present invention.
Fig. 3 is the flow diagram of the decrypting process shown in the embodiment of the present invention.
Specific embodiment
As shown in Figure 1, rear quantum PGP encryption method of the invention and decryption method are for two user (user A in network
With the communication process of user B).The message m of user A generates encrypted disappear after quantum PGP encryption method after of the invention
C1 and message decryption key c2 is ceased, and is sent to user B.At the end user B, using rear quantum PGP decryption method of the invention into
Row is decrypted and is verified.
As shown in Fig. 2, quantum PGP encryption method after provided in an embodiment of the present invention comprising following encrypting step:
Message m is calculated using hash function HASH, generates abstract m1, m1=HASH (m)；
By the ID ID of sender of the messageAIt is attached on abstract m1 with time stamp T S, obtains m2=m1+IDA+TS；
The random private key SKa for generating sender, and public key PKa is generated based on private key, wherein private key SKa is protected by sender
Pipe, public key PKa are disclosed；
Signature s=Rainbow (SKa, m2) is generated using private key SKa and signature generating function Rainbow；
Message m is compressed using compression function PKZIP, obtains m3=PKZIP (m | s).
Generate Message Encryption key K1With message decryption key K2；
Use Message Encryption key K1Compressed message m 3 is encrypted with message encryption function SimpleMatrix, is obtained
Encrypted message c1=SimpleMatrix (K1,m3)；
Use the public key PKa and pad function Rainbow of recipient-1To message decryption key K2Encryption, is added
Message decryption key c2=Rainbow after close-1(PKa,K2)；
C1, c2 are sent to recipient.
After above-mentioned in the encrypting step of quantum PGP encryption method, the process that hash function HASH calculates message m is such as
Under:
Message m is indicated using binary system m；
The length of the m indicated using 100...000 and 64 bits fills m, i.e. m '=pad (m)；
M is divided into the block of 512 bits, i.e. M(1),M(2),...,M(N)；
64 constants are used, and W is identified as0,W1,...,W63；
8 variables are used, i.e. A=0x6A09E667, B=0xBB67AE85, C=0x3C6EF372, D=
0xA54FF53A, E=0x510E527F, F=0x9B05688C, G=0x1F83D9AB, H=0x5BE0CD19；
Calculated result in each block based on a upper block calculates 64 wheel interative computations, last blocks of calculating knot
Fruit, that is, cryptographic Hash.
After above-mentioned in the encrypting step of quantum PGP encryption method, the process for generating function Rainbow calculate the signature of signing is such as
Under:
Generate messageSignature, calculate first
Then, it calculates
Finally, calculate the signature
Further, in the embodiment of the present invention, additionally provide it is a kind of after quantum PGP encryption device, use it is above-mentioned after
Quantum PGP encryption method.
As shown in figure 3, the embodiment of the invention provides rear quantum PGP decryption method include following decryption step:
Message decryption key c2 is decrypted using private key SKb and key decryption function Rainbow, obtains decruption key
K2=Rainbow (SKb, c2)；
Use decruption key k2 and message decryption function SimpleMatrix-1Encrypted message c1 is decrypted, is obtained
To m3=SimpleMatrix-1(K2,c1)；
M3 is decompressed using decompression function, m | s=PKZIP-1(m3)；
Signature, m2 (m1+ID are verified using the public key PKa of senderA+ TS)=Rainbow-1(PKa,s)；
It is generated and is made a summary using hash function HASH, m1 '=HASH (m)；
M1 ', m1 are compared, is otherwise false if same signature is true.
After above-mentioned in the decryption step of quantum PGP decryption method, key decryption function Rainbow uses private key decruption key
Process it is as follows:
It is rightIt is decrypted, calculates first
Then, it calculates
Finally, calculating in plain text
After above-mentioned in the decryption step of quantum PGP decryption method, message decryption function SimpleMatrix-1Use private key solution
The process of close message is as follows:
(1) x=S is calculated-1(w)；S ' is the matrix of m × m:
(2) y (y is calculated1,y2,...,yn)=F-1(x), E '1Indicate following matrix:
(3)E′2Indicate following matrix:
(4) if E '1It is reversible, calculates the inverse of it；
(5) it is based on B × E '1 -1×E′2- C=0, constructed variable y1,y2,...,ynSystem of linear equations；
(6) system of linear equations is solved；
(7) if E '1It is irreversible, but E '2Reversible, calculate the inverse of it；
(8) it is based on C × E '2 -1×E′1- B=0, constructed variable y1,y2,...,ynSystem of linear equations；
(9) system of linear equations is solved；
(10) if E '1、E′2All irreversible, A '=A (y) is reversible；
(11) it is based on A '-1×E′1- B=0, A '-1×E′2- C=0, constructed variable y1,y2,...,ynLinear equation
Group；
(12) system of linear equations is solved；
(13) if E '1、E′2, A '=A (y) it is all irreversible, decryption failure；
(14) plaintext z=T ' is calculated-1Y.T ' is the matrix of n × n.
Further, in the embodiment of the present invention, additionally provide it is a kind of after quantum PGP decryption device, use it is above-mentioned after
Quantum PGP decryption method.
In conclusion rear quantum PGP encryption method of the invention and encryption device, by the ID and timestamp of sender of the message
It is attached on abstract, and generates signature using private key and signature generating function, can not distorting for instant messaging is realized based on PGP
Property, non-repudiation, can support large-scale secure communication, there is security level high, anti-quantum calculation, can not distort, no
The characteristics of falsifiability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. quantum PGP encryption method after a kind of characterized by comprising
Message m is calculated using hash function HASH, generates abstract m1, m1=HASH (m)；
By the ID ID of sender of the messageAIt is attached on abstract m1 with time stamp T S, obtains m2=m1+IDA+TS；
The random private key SKa for generating sender, and public key PKa is generated based on private key, wherein private key SKa is taken care of by sender, public
Key PKa is disclosed；
Signature s=Rainbow (SKa, m2) is generated using private key SKa and signature generating function Rainbow；
Message m is compressed using compression function PKZIP, obtains m3=PKZIP (m | s)；
Generate Message Encryption key K1With message decryption key K2；
Use Message Encryption key K1Compressed message m 3 is encrypted with message encryption function SimpleMatrix, is encrypted
Message c1=SimpleMatrix (K afterwards1,m3)；
Use the public key PKa and pad function Rainbow of recipient-1To message decryption key K2Encryption, after obtaining encryption
Message decryption key c2=Rainbow-1(PKa,K2)；
C1, c2 are sent to recipient.
2. quantum PGP encryption method after as described in claim 1, which is characterized in that hash function HASH counts message m
The process of calculation is as follows:
Message m is indicated using binary system m；
The length of the m indicated using 100...000 and 64 bits fills m, i.e. m '=pad (m)；
M is divided into the block of 512 bits, i.e. M(1),M(2),...,M(N)；
64 constants are used, and W is identified as0,W1,...,W63；
8 variables are used, i.e. A=0x6A09E667, B=0xBB67AE85, C=0x3C6EF372, D=0xA54FF53A, E
=0x510E527F, F=0x9B05688C, G=0x1F83D9AB, H=0x5BE0CD19；
Calculated result in each block based on a upper block calculates 64 wheel interative computations, and last blocks of calculated result is
Cryptographic Hash.
3. quantum PGP encryption method after as described in claim 1, which is characterized in that signature generating function Rainbow calculates label
The process of name is as follows:
Generate messageSignature, calculate first
Then, it calculates
Finally, calculate the signature
4. quantum PGP encryption device after a kind of, which is characterized in that using rear quantum PGP as described in any one of claims 1-3
Encryption method.
5. quantum PGP decryption method after a kind of, which is characterized in that including
Message decryption key c2 is decrypted using private key SKb and key decryption function Rainbow, obtains decruption key K2=
Rainbow(SKb,c2)；
Use decruption key k2 and message decryption function SimpleMatrix-1Encrypted message c1 is decrypted, m3 is obtained
=SimpleMatrix-1(K2,c1)；
M3 is decompressed using decompression function, m | s=PKZIP-1(m3)；
Signature, m2 (m1+ID are verified using the public key PKa of senderA+ TS)=Rainbow-1(PKa,s)；
It is generated and is made a summary using hash function HASH, m1 '=HASH (m)；
M1 ', m1 are compared, is otherwise false if same signature is true.
6. quantum PGP decryption method after as claimed in claim 5, which is characterized in that key decryption function Rainbow uses private
The process of key decruption key is as follows:
It is rightIt is decrypted, calculates first
Then, it calculates
Finally, calculating in plain text
7. quantum PGP decryption method after as claimed in claim 5, which is characterized in that message decryption function SimpleMatrix-1
Process using private key decryption message is as follows:
(1) x=S is calculated-1(w)；S ' is the matrix of m × m:
(2) y (y is calculated1,y2,...,yn)=F-1(x), E '1Indicate following matrix:
(3)E′2Indicate following matrix:
(4) if E '1It is reversible, calculates the inverse of it；
(5) it is based onConstructed variable is y1,y2,...,ynSystem of linear equations；
(6) system of linear equations is solved；
(7) if E '1It is irreversible, but E '2Reversible, calculate the inverse of it；
(8) it is based onConstructed variable is y1,y2,...,ynSystem of linear equations；
(9) system of linear equations is solved；
(10) if E '1、E′2All irreversible, A '=A (y) is reversible；
(11) it is based on A '-1×E′1- B=0, A '-1×E′2- C=0, constructed variable y1,y2,...,ynSystem of linear equations；
(12) system of linear equations is solved；
(13) if E '1、E′2, A '=A (y) it is all irreversible, decryption failure；
(14) plaintext z=T ' is calculated-1Y.T ' is the matrix of n × n.
8. quantum PGP decrypts device after a kind of, which is characterized in that using such as the described in any item rear quantum PGP of claim 5-7
Decryption method.
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