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ring decrypt data encrypted with an RSA key and OAEP padding

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Joker answered on May 19, 2022 Popularity 2/10 Helpfulness 1/10

answer ring decrypt data encrypted with an RSA key and OAEP padding

related ring decrypt data encrypted with an RSA key and PKCS#1 v1.5 padding

related ring encrypt data with an RSA key and OAEP padding

related ring decrypt data encrypted with an RSA key and OAEP padding

ring decrypt data encrypted with an RSA key and OAEP padding

Comment

rsa_decrypt_oaep(pRsaKey,cEncryptedData[,nHashAlgorithm]) ---> return a string containing the decryption of cEncryptedData
        nHashAlgorithm indicates the hash algorithm to use for OAEP padding. If omited, SHA-1 is used by default.
        Possible values for nHashAlgorithm argument are:
         - $OSSL_HASH_MD5 which is equal to 0
         - $OSSL_HASH_SHA1 which is equal to 1
         - $OSSL_HASH_SHA256 which is equal to 2
         - $OSSL_HASH_SHA384 which is equal to 3
         - $OSSL_HASH_SHA512 which is equal to 4

Popularity 2/10 Helpfulness 1/10 Language whatever

Source: ring-lang.github.io

Tags: key oaep ring rsa whatever

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Contributed on May 19 2022

Joker

0 Answers Avg Quality 2/10

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ring decrypt data encrypted with an RSA key and PKCS#1 v1.5 padding

Comment

rsa_decrypt_pkcs(pRsaKey,cEncryptedData) ---> return a string containing the decryption of cEncryptedData

Popularity 1/10 Helpfulness 1/10 Language whatever

Source: ring-lang.github.io

Tags: ring rsa whatever key pkcs#1

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Contributed on May 19 2022

Joker

0 Answers Avg Quality 2/10

ring decrypt data encrypted with an RSA key and PKCS#1 v1.5 padding

Comment

/* decrypt a file by first decrypting AES key that was used to encrypt it
 * and then decrypt the whole content using the AES key
 */
try
        /* read Alice private key */
        rsaKeyPEM = Read("alice_private_key.pem")
        rsaKey = rsa_import_pem(rsaKeyPEM)

        /* calculate the modulus length */
        rsaKeyParams = rsa_export_params(rsaKey)
        modulusLen = rsaKeyParams[:bits]/ 8

        /* read encrypted file */
        cEncryptedContent = Read ("encrypted_document.enc")

        /* IV is the first 16 bytes if the file */
        cIV = substr(cEncryptedContent, 1, 16)

        /* encrypted key follows IV and its length is modulusLen */
        cEncryptedKey = substr(cEncryptedContent, 17, modulusLen)

        /* encrypted data follows the key */
        cEncryptedData = substr(cEncryptedContent, 17 + modulusLen)

        /* decrypt the AES-128 key */
        cKey = rsa_decrypt_pkcs(rsaKey,cEncryptedKey)

        /* decrypt the data using the AES-128 key */

        cPlainData = Decrypt(cEncryptedData,cKey,cIV,"aes128")

        /* store the decrypted data to a file */
        Write("decrypted_document.txt", cPlainData)

catch
        See "Unexpected error occured: " + cCatchError + nl
done

Popularity 1/10 Helpfulness 1/10 Language whatever

Source: ring-lang.github.io

Tags: pkcs#1 whatever ring key rsa

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Contributed on May 19 2022

Joker

0 Answers Avg Quality 2/10

ring encrypt data with an RSA key and OAEP padding

Comment

rsa_encrypt_oaep(pRsaKey,cPlainData[,nHashAlgorithm]) ---> return a string containing the OAEP encryption of cPlainData
        nHashAlgorithm indicates the hash algorithm to use for OAEP padding. If omited, SHA-1 is used by default.
        Possible values for nHashAlgorithm argument are:
         - $OSSL_HASH_MD5 which is equal to 0
         - $OSSL_HASH_SHA1 which is equal to 1
         - $OSSL_HASH_SHA256 which is equal to 2
         - $OSSL_HASH_SHA384 which is equal to 3
         - $OSSL_HASH_SHA512 which is equal to 4

Popularity 2/10 Helpfulness 1/10 Language whatever

Source: ring-lang.github.io

Tags: whatever oaep ring rsa key

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Contributed on May 19 2022

Joker

0 Answers Avg Quality 2/10

ring encrypt data with an RSA key and OAEP padding

Comment

/* encrypt a file using AES key and then encrypt the AES key using an RSA public key using OAEP padding */
try
        /* read Alice public key */
        rsaPublicKeyPEM = Read("alice_public_key.pem")
        rsaPublicKey = rsa_import_pem(rsaPublicKeyPEM)

        /* encrypt file with random AES-128 key */
        cData = Read ("secret_document.txt")
        cKey = RandBytes(16)
        cIV = RandBytes(16)
        cEncryptedData = Encrypt(cData,cKey,cIV,"aes128")

        /* encrypt the AES-128 key with the RSA public key */
        cEncryptedKey = rsa_encrypt_oaep(rsaPublicKey,cKey)

        /* store IV, encrypted AES key and encrypted data in a file to be sent to Alice*/
        Write("oaep_encrypted_document.enc", cIV + cEncryptedKey + cEncryptedData)

catch
        See "Unexpected error occured: " + cCatchError + nl
done

Popularity 3/10 Helpfulness 1/10 Language whatever

Source: ring-lang.github.io

Tags: ring whatever rsa oaep key

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Contributed on May 19 2022

Joker

0 Answers Avg Quality 2/10

ring decrypt data encrypted with an RSA key and OAEP padding

Comment

/* decrypt a file by first decrypting AES key that was used to encrypt it
 * and then decrypt the whole content using the AES key
 */
try
        /* read Alice private key */
        rsaKeyPEM = Read("alice_private_key.pem")
        rsaKey = rsa_import_pem(rsaKeyPEM)

        /* calculate the modulus length */
        rsaKeyParams = rsa_export_params(rsaKey)
        modulusLen = rsaKeyParams[:bits]/ 8

        /* read encrypted file */
        cEncryptedContent = Read ("oaep_encrypted_document.enc")

        /* IV is the first 16 bytes if the file */
        cIV = substr(cEncryptedContent, 1, 16)

        /* encrypted key follows IV and its length is modulusLen */
        cEncryptedKey = substr(cEncryptedContent, 17, modulusLen)

        /* encrypted data follows the key */
        cEncryptedData = substr(cEncryptedContent, 17 + modulusLen)

        /* decrypt the AES-128 key */
        cKey = rsa_decrypt_oaep(rsaKey,cEncryptedKey)

        /* decrypt the data using the AES-128 key */

        cPlainData = Decrypt(cEncryptedData,cKey,cIV,"aes128")

        /* store the decrypted data to a file */
        Write("oaep_decrypted_document.txt", cPlainData)

catch
        See "Unexpected error occured: " + cCatchError + nl
done

Popularity 2/10 Helpfulness 1/10 Language whatever

Source: ring-lang.github.io

Tags: rsa ring oaep whatever key

Link to this answer
Share Copy Link

Contributed on May 19 2022

Joker

0 Answers Avg Quality 2/10

ring decrypt data encrypted with an RSA key and OAEP padding

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ring decrypt data encrypted with an RSA key and OAEP padding

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ring decrypt data encrypted with an RSA key and PKCS#1 v1.5 padding

ring decrypt data encrypted with an RSA key and PKCS#1 v1.5 padding

ring encrypt data with an RSA key and OAEP padding

ring encrypt data with an RSA key and OAEP padding

ring decrypt data encrypted with an RSA key and OAEP padding

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