openssl_public_encrypt 사용에 어려움을 겪고 있습니다.

• AWS매니아 8시간 전 2025.08.16 10:03 새글
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나우호스팅 　8시간 전



openssl_public_encrypt 함수를 사용하려면 먼저 공개키를 생성해야 합니다. 공개키를 생성하는 방법은 두 가지가 있습니다.

1. RSA 공개키를 생성하는 방법입니다. RSA 공개키를 생성하는 방법은 OpenSSL의 rsa_new 함수를 사용하여 공개키를 생성할 수 있습니다.



#hostingforum.kr
c

RSA *rsa = RSA_new();

BIGNUM *e = BN_new();

BN_set_word(e, 65537);

RSA_generate_key_ex(rsa, 2048, e, NULL);



2. ECDSA 공개키를 생성하는 방법입니다. ECDSA 공개키를 생성하는 방법은 OpenSSL의 EC_KEY_new 함수를 사용하여 공개키를 생성할 수 있습니다.



#hostingforum.kr
c

EC_KEY *ec_key = EC_KEY_new_by_curve_name(NID_secp521r1);



public_key 인자는 RSA 또는 EC_KEY 객체를 사용하여 생성한 공개키를 사용해야 합니다.



#hostingforum.kr
c

RSA *rsa = RSA_new();

// RSA 공개키 생성

// ...



EC_KEY *ec_key = EC_KEY_new_by_curve_name(NID_secp521r1);

// ECDSA 공개키 생성

// ...



// RSA 공개키 사용

openssl_public_encrypt(data, encrypted_data, rsa, padding);



// ECDSA 공개키 사용

openssl_public_encrypt(data, encrypted_data, ec_key, padding);



key 인자는 공개키 객체를 사용하여 암호화를 수행해야 합니다.



#hostingforum.kr
c

openssl_public_encrypt(data, encrypted_data, public_key, padding);



padding 인자는 암호화에 사용할 패딩을 지정해야 합니다. OpenSSL에서는 PKCS1_PADDING, RSA_PKCS1_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1

2025-08-16 10:04

<br /> <br /> openssl_public_encrypt 함수를 사용하려면 먼저 공개키를 생성해야 합니다. 공개키를 생성하는 방법은 두 가지가 있습니다.<br /> <br /> 1. RSA 공개키를 생성하는 방법입니다. RSA 공개키를 생성하는 방법은 OpenSSL의 rsa_new 함수를 사용하여 공개키를 생성할 수 있습니다. <br /> <br /> [code]#hostingforum.kr<br>c<br /> RSA *rsa = RSA_new();<br /> BIGNUM *e = BN_new();<br /> BN_set_word(e, 65537);<br /> RSA_generate_key_ex(rsa, 2048, e, NULL);<br /> [/code]<br /> <br /> 2. ECDSA 공개키를 생성하는 방법입니다. ECDSA 공개키를 생성하는 방법은 OpenSSL의 EC_KEY_new 함수를 사용하여 공개키를 생성할 수 있습니다.<br /> <br /> [code]#hostingforum.kr<br>c<br /> EC_KEY *ec_key = EC_KEY_new_by_curve_name(NID_secp521r1);<br /> [/code]<br /> <br /> public_key 인자는 RSA 또는 EC_KEY 객체를 사용하여 생성한 공개키를 사용해야 합니다. <br /> <br /> [code]#hostingforum.kr<br>c<br /> RSA *rsa = RSA_new();<br /> // RSA 공개키 생성<br /> // ...<br /> <br /> EC_KEY *ec_key = EC_KEY_new_by_curve_name(NID_secp521r1);<br /> // ECDSA 공개키 생성<br /> // ...<br /> <br /> // RSA 공개키 사용<br /> openssl_public_encrypt(data, encrypted_data, rsa, padding);<br /> <br /> // ECDSA 공개키 사용<br /> openssl_public_encrypt(data, encrypted_data, ec_key, padding);<br /> [/code]<br /> <br /> key 인자는 공개키 객체를 사용하여 암호화를 수행해야 합니다. <br /> <br /> [code]#hostingforum.kr<br>c<br /> openssl_public_encrypt(data, encrypted_data, public_key, padding);<br /> [/code]<br /> <br /> padding 인자는 암호화에 사용할 패딩을 지정해야 합니다. OpenSSL에서는 PKCS1_PADDING, RSA_PKCS1_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1_PSS_SHA256_PADDING, RSA_PKCS1_PSS_SHA384_PADDING, RSA_PKCS1_PSS_SHA512_PADDING, RSA_NO_PADDING, RSA_PKCS1_ENCRYPT_PADDING, RSA_PKCS1_OAEP_PADDING, RSA_PKCS1_OAEP_MGF1_PADDING, RSA_PKCS1_OAEP_SHA1_PADDING, RSA_PKCS1_OAEP_SHA256_PADDING, RSA_PKCS1_OAEP_SHA384_PADDING, RSA_PKCS1_OAEP_SHA512_PADDING, RSA_PKCS1_PSS_PADDING, RSA_PKCS1_PSS_MGF1_PADDING, RSA_PKCS1_PSS_MGF1_SHA1_PADDING, RSA_PKCS1_PSS_MGF1_SHA256_PADDING, RSA_PKCS1_PSS_MGF1_SHA384_PADDING, RSA_PKCS1_PSS_MGF1_SHA512_PADDING, RSA_PKCS1_PSS_SHA1_PADDING, RSA_PKCS1