JavaTM 2 Platform
Standard Ed. 5.0

javax.crypto
Ŭ·¡½º KeyGenerator

java.lang.Object 
  »óÀ§¸¦ È®Àå javax.crypto.KeyGenerator

public class KeyGenerator
extends Object

ÀÌ Å¬·¡½º´Â (´ëĪ) Å° Á¦³×·¹ÀÌÅÍÀÇ ±â´ÉÀ» Á¦°øÇÕ´Ï´Ù.

Å° Á¦³×·¹ÀÌÅÍ´Â ÀÌ Å¬·¡½ºÀÇ getInstance Ŭ·¡½º ¸Þ¼­µåÀÇ 1°³¸¦ »ç¿ëÇØ ±¸ÃàµË´Ï´Ù.

KeyGenerator °´Ã¼´Â Àç»ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù. Áï, Å°ÀÇ »ý¼º ÈÄ, °°Àº KeyGenerator °´Ã¼¸¦ Àç»ç¿ëÇØ ¶ÇÇÑ Å°¸¦ »ý¼ºÇÒ ¼ö ÀÖ½À´Ï´Ù .

Å°¸¦ »ý¼ºÇÏ·Á¸é 2 ¹æ¹ýÀÇ ¹æ¹ý, Áï, ¾Ë°í¸®Áò¿¡ Á¸ÇÏÁö ¾Ê´Â ¹æ¹ý°ú ¾Ë°í¸®Áò¿¡ ƯÁ¤ÀÇ ¹æ¹ýÀÌ ÀÖ½À´Ï´Ù. ÀÌ 2°³ÀÇ ¹æ¹ýÀº °´Ã¼ÀÇ ÃʱâÈ­¸¸ÀÌ ´Ù¸¨´Ï´Ù.

Ŭ¶óÀ̾ðÆ®°¡ init ¸Þ¼­µåÀÇ È£Ãâ·Î ¸í½ÃÀûÀ¸·Î KeyGenerator¸¦ ÃʱâÈ­ÇÏÁö ¾Ê´Â °æ¿ì´Â °¢ ÇÁ·Î¹ÙÀÌ´õ´Â µðÆúÆ®ÀÇ ÃʱâÈ­¸¦ Á¦°øÇØ, ÀÌ°ÍÀ» ¹®¼­È­ÇÏÁö ¾ÊÀ¸¸é ¾ÈµË´Ï´Ù.

µµÀÔµÈ ¹öÀü :
1.4
°ü·Ã Ç׸ñ:
SecretKey

»ý¼ºÀÚ °³¿ä
protected KeyGenerator (KeyGeneratorSpi  keyGenSpi, Provider  provider, String  algorithm)
          KeyGenerator °´Ã¼¸¦ ÀÛ¼ºÇÕ´Ï´Ù.
 
¸Þ¼­µå °³¿ä
 SecretKey generateKey ()
          ºñ¹ÐÅ°¸¦ »ý¼ºÇÕ´Ï´Ù.
 String getAlgorithm ()
          ÀÌ KeyGenerator °´Ã¼ÀÇ ¾Ë°í¸®Áò¸íÀ» ¸®ÅÏÇÕ´Ï´Ù.
static KeyGenerator getInstance (String  algorithm)
          ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÇ KeyGenerator °´Ã¼¸¦ »ý¼ºÇÕ´Ï´Ù.
static KeyGenerator getInstance (String  algorithm, Provider  provider)
          ÁöÁ¤µÈ ÇÁ·Î¹ÙÀÌ´õ·ÎºÎÅÍ, ÁöÁ¤µÈ Å° ¾Ë°í¸®ÁòÀÇ KeyGenerator °´Ã¼¸¦ »ý¼ºÇÕ´Ï´Ù.
static KeyGenerator getInstance (String  algorithm, String  provider)
          ÁöÁ¤µÈ ÇÁ·Î¹ÙÀÌ´õ·ÎºÎÅÍ, ÁöÁ¤µÈ Å° ¾Ë°í¸®ÁòÀÇ KeyGenerator °´Ã¼¸¦ ÀÛ¼ºÇÕ´Ï´Ù.
 Provider getProvider ()
          ÀÌ KeyGenerator °´Ã¼ÀÇ ÇÁ·Î¹ÙÀÌ´õ¸¦ ¸®ÅÏÇÕ´Ï´Ù.
 void init (AlgorithmParameterSpec  params)
          ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦, ÁöÁ¤µÈ ÆĶó¹ÌÅÍ ¼¼Æ®¸¦ »ç¿ëÇØ ÃʱâÈ­ÇÕ´Ï´Ù.
 void init (AlgorithmParameterSpec  params, SecureRandom  random)
          ÁöÁ¤µÈ ÆĶó¹ÌÅÍ ¼¼Æ®¿Í »ç¿ëÀÚ°¡ Á¦°øÇÏ´Â ³­¼öÀÇ ¹ß»ý¿øÀ» »ç¿ëÇØ, ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ÃʱâÈ­ÇÕ´Ï´Ù.
 void init (int keysize)
          ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ƯÁ¤ÀÇ Å° »çÀÌÁî¿¡ ÀÀÇØ ÃʱâÈ­ÇÕ´Ï´Ù.
 void init (int keysize, SecureRandom  random)
          »ç¿ëÀÚ°¡ Á¦°øÇÏ´Â ³­¼öÀÇ ¹ß»ý¿øÀ» »ç¿ëÇØ, ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ƯÁ¤ÀÇ Å° »çÀÌÁî¿¡ ÀÀÇØ ÃʱâÈ­ÇÕ´Ï´Ù.
 void init (SecureRandom  random)
          ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ÃʱâÈ­ÇÕ´Ï´Ù.
 
Ŭ·¡½º java.lang. Object ·ÎºÎÅÍ »ó¼ÓµÈ ¸Þ¼­µå
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

»ý¼ºÀÚ »ó¼¼

KeyGenerator

protected KeyGenerator(KeyGeneratorSpi  keyGenSpi,
                       Provider  provider,
                       String  algorithm)
KeyGenerator °´Ã¼¸¦ ÀÛ¼ºÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
keyGenSpi - À§¾çó
provider - ÇÁ·Î¹ÙÀÌ´õ
algorithm - ¾Ë°í¸®Áò
¸Þ¼­µåÀÇ »ó¼¼

getAlgorithm

public final String  getAlgorithm()
ÀÌ KeyGenerator °´Ã¼ÀÇ ¾Ë°í¸®Áò¸íÀ» ¸®ÅÏÇÕ´Ï´Ù.

ÀÌ°ÍÀº ÀÌ KeyGenerator °´Ã¼¸¦ ÀÛ¼ºÇÑ getInstance È£ÃâÀÇ 1°³ ·Î ÁöÁ¤µÈ À̸§°ú °°½À´Ï´Ù.

¹Ýȯ°ª:
ÀÌ KeyGenerator °´Ã¼ÀÇ ¾Ë°í¸®Áò¸í

getInstance

public static final KeyGenerator  getInstance(String  algorithm)
                                      throws NoSuchAlgorithmException 
ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÇ KeyGenerator °´Ã¼¸¦ »ý¼ºÇÕ´Ï´Ù. µðÆúÆ®ÀÇ ÇÁ·Î¹ÙÀÌ´õÀÇ ÆÐÅ°Áö°¡ ¿ä±¸µÈ Å° Á¦³×·¹ÀÌÅÍÀÇ ±¸ÇöÀ» Á¦°øÇÏ°í ÀÖ´Â °æ¿ì´Â ±× ±¸ÇöÀ» °¡Áø KeyGenerator Ŭ·¡½ºÀÇ ÀνºÅϽº°¡ ¸®Åϵ˴ϴ٠. ¿ä±¸µÈ Å° Á¦³×·¹ÀÌÅÍ°¡ µðÆúÆ®ÀÇ ÆÐÅ°Áö·Î ¾òÀ» ¼ö ¾ø´Â °æ¿ì´Â ´Ù¸¥ ÇÁ·Î¹ÙÀÌ´õ ÆÐÅ°Áö°¡ °Ë»öµË´Ï´Ù.

ÆĶó¹ÌÅÍ:
algorithm - ¿ä±¸µÈ Å° ¾Ë°í¸®ÁòÀÇ Ç¥ÁØÀûÀÎ À̸§. ¾Ë°í¸®ÁòÀÇ Ç¥ÁØ¸í¿¡ ´ëÇؼ­´Â ¡¸Java ¾Ïȣȭ È®Àå ±â´É ·¹ÆÛ·±½º °¡À̵塹ÀÇ ºÎ·Ï A¸¦ ÂüÁ¶
¹Ýȯ°ª:
»õ·Î¿î KeyGenerator °´Ã¼
¿¹¿Ü:
NullPointerException - ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÌ nullÀÎ °æ¿ì
NoSuchAlgorithmException - ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÇ Å° Á¦³×·¹ÀÌÅÍ°¡ µðÆúÆ®ÀÇ ÇÁ·Î¹ÙÀÌ´õ ÆÐÅ°Áö¿¡µµ, °Ë»öÇÑ °Í ¿ÜÀÇ ÇÁ·Î¹ÙÀÌ´õ ÆÐÅ°Áö¿¡µµ ¾ø´Â °æ¿ì

getInstance

public static final KeyGenerator  getInstance(String  algorithm,
                                             String  provider)
                                      throws NoSuchAlgorithmException,

                                             NoSuchProviderException 
ÁöÁ¤µÈ ÇÁ·Î¹ÙÀÌ´õ·ÎºÎÅÍ, ÁöÁ¤µÈ Å° ¾Ë°í¸®ÁòÀÇ KeyGenerator °´Ã¼¸¦ ÀÛ¼ºÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
algorithm - ¿ä±¸µÈ Å° ¾Ë°í¸®ÁòÀÇ Ç¥ÁØÀûÀÎ À̸§. ¾Ë°í¸®ÁòÀÇ Ç¥ÁØ¸í¿¡ ´ëÇؼ­´Â ¡¸Java ¾Ïȣȭ È®Àå ±â´É ·¹ÆÛ·±½º °¡À̵塹ÀÇ ºÎ·Ï A¸¦ ÂüÁ¶
provider - ÇÁ·Î¹ÙÀÌ´õ¸í
¹Ýȯ°ª:
»õ·Î¿î KeyGenerator °´Ã¼
¿¹¿Ü:
NullPointerException - ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÌ nullÀÎ °æ¿ì
NoSuchAlgorithmException - ÁöÁ¤µÈ ÇÁ·Î¹ÙÀÌ´õ·Î ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÇ Å° Á¦³×·¹ÀÌÅÍ°¡ ¾ø´Â °æ¿ì
NoSuchProviderException - ÁöÁ¤µÈ ÇÁ·Î¹ÙÀÌ´õ°¡ ¼³Á¤µÇ¾î ÀÖÁö ¾ÊÀº °æ¿ì
IllegalArgumentException - provider°¡ nullÀÎ °æ¿ì

getInstance

public static final KeyGenerator  getInstance(String  algorithm,
                                             Provider  provider)
                                      throws NoSuchAlgorithmException 
ÁöÁ¤µÈ ÇÁ·Î¹ÙÀÌ´õ·ÎºÎÅÍ, ÁöÁ¤µÈ Å° ¾Ë°í¸®ÁòÀÇ KeyGenerator °´Ã¼¸¦ »ý¼ºÇÕ´Ï´Ù. provider´Â µî·ÏµÇ¾î ÀÖÀ» ÇÊ¿ä´Â ¾ø´Â °Í¿¡ ÁÖÀÇÇØ ÁÖ¼¼¿ä.

ÆĶó¹ÌÅÍ:
algorithm - ¿ä±¸µÈ Å° ¾Ë°í¸®ÁòÀÇ Ç¥ÁØÀûÀÎ À̸§. ¾Ë°í¸®ÁòÀÇ Ç¥ÁØ¸í¿¡ ´ëÇؼ­´Â ¡¸Java ¾Ïȣȭ È®Àå ±â´É ·¹ÆÛ·±½º °¡À̵塹ÀÇ ºÎ·Ï A¸¦ ÂüÁ¶
provider - ÇÁ·Î¹ÙÀÌ´õ
¹Ýȯ°ª:
»õ·Î¿î KeyGenerator °´Ã¼
¿¹¿Ü:
NullPointerException - ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÌ nullÀÎ °æ¿ì
NoSuchAlgorithmException - ÁöÁ¤µÈ ÇÁ·Î¹ÙÀÌ´õ·Î ÁöÁ¤µÈ ¾Ë°í¸®ÁòÀÇ Å° Á¦³×·¹ÀÌÅÍ°¡ ¾ø´Â °æ¿ì
IllegalArgumentException - provider°¡ nullÀÎ °æ¿ì

getProvider

public final Provider  getProvider()
ÀÌ KeyGenerator °´Ã¼ÀÇ ÇÁ·Î¹ÙÀÌ´õ¸¦ ¸®ÅÏÇÕ´Ï´Ù.

¹Ýȯ°ª:
ÀÌ KeyGenerator °´Ã¼ÀÇ ÇÁ·Î¹ÙÀÌ´õ

init

public final void init(SecureRandom  random)
ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ÃʱâÈ­ÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
random - ÀÌ Á¦³×·¹ÀÌÅÍÀÇ ³­¼öÀÇ ¹ß»ý¿ø

init

public final void init(AlgorithmParameterSpec  params)
                throws InvalidAlgorithmParameterException 
ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦, ÁöÁ¤µÈ ÆĶó¹ÌÅÍ ¼¼Æ®¸¦ »ç¿ëÇØ ÃʱâÈ­ÇÕ´Ï´Ù.

ÀÌ Å° Á¦³×·¹ÀÌÅÍ°¡ ³­¼ö ¹ÙÀÌÆ®¸¦ ÇÊ¿ä·Î ÇÏ´Â °æ¿ì´Â ÀνºÅç µÇ°í ÀÖ´Â ÇÁ·Î¹ÙÀÌ´õ °¡¿îµ¥, °¡Àå ¿ì¼± ¼øÀ§ÀÇ ³ôÀº ÇÁ·Î¹ÙÀÌ´õ SecureRandom ±¸ÇöÀ» ³­¼öÀÇ ¹ß»ý¿øÀ¸·Î¼­ »ç¿ëÇØ ³­¼ö ¹ÙÀÌÆ®¸¦ ÃëµæÇÕ´Ï´Ù. SecureRandom ±¸ÇöÀ» Á¦°øÇÏ´Â ÇÁ·Î¹ÙÀÌ´õ°¡ ÀνºÅçµÇ¾î ÀÖÁö ¾ÊÀº °æ¿ì´Â ½Ã½ºÅÛÀÌ Á¦°øÇÏ´Â ³­¼öÀÇ ¹ß»ý¿øÀÌ »ç¿ëµË´Ï´Ù.

ÆĶó¹ÌÅÍ:
params - Å° Á¦³×·¹ÀÌÅÍÀÇ ÆĶó¹ÌÅÍ
¿¹¿Ü:
InvalidAlgorithmParameterException - ÁöÁ¤µÈ ÆĶó¹ÌÅÍ°¡ ÀÌ Å° Á¦³×·¹ÀÌÅÍ¿¡ ºÎÀûÀýÇÑ °æ¿ì

init

public final void init(AlgorithmParameterSpec  params,
                       SecureRandom  random)
                throws InvalidAlgorithmParameterException 
ÁöÁ¤µÈ ÆĶó¹ÌÅÍ ¼¼Æ®¿Í »ç¿ëÀÚ°¡ Á¦°øÇÏ´Â ³­¼öÀÇ ¹ß»ý¿øÀ» »ç¿ëÇØ, ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ÃʱâÈ­ÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
params - Å° Á¦³×·¹ÀÌÅÍÀÇ ÆĶó¹ÌÅÍ
random - ÀÌ Å° Á¦³×·¹ÀÌÅÍÀÇ ³­¼öÀÇ ¹ß»ý¿ø
¿¹¿Ü:
InvalidAlgorithmParameterException - params°¡ ÀÌ Å° Á¦³×·¹ÀÌÅÍ¿¡ ºÎÀûÀýÇÑ °æ¿ì

init

public final void init(int keysize)
ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ƯÁ¤ÀÇ Å° »çÀÌÁî¿¡ ÀÀÇØ ÃʱâÈ­ÇÕ´Ï´Ù.

ÀÌ Å° Á¦³×·¹ÀÌÅÍ°¡ ³­¼ö ¹ÙÀÌÆ®¸¦ ÇÊ¿ä·Î ÇÏ´Â °æ¿ì´Â ÀνºÅç µÇ°í ÀÖ´Â ÇÁ·Î¹ÙÀÌ´õ °¡¿îµ¥, °¡Àå ¿ì¼± ¼øÀ§ÀÇ ³ôÀº ÇÁ·Î¹ÙÀÌ´õ SecureRandom ±¸ÇöÀ» ³­¼öÀÇ ¹ß»ý¿øÀ¸·Î¼­ »ç¿ëÇØ ³­¼ö ¹ÙÀÌÆ®¸¦ ÃëµæÇÕ´Ï´Ù. SecureRandom ±¸ÇöÀ» Á¦°øÇÏ´Â ÇÁ·Î¹ÙÀÌ´õ°¡ ÀνºÅçµÇ¾î ÀÖÁö ¾ÊÀº °æ¿ì´Â ½Ã½ºÅÛÀÌ Á¦°øÇÏ´Â ³­¼öÀÇ ¹ß»ý¿øÀÌ »ç¿ëµË´Ï´Ù.

ÆĶó¹ÌÅÍ:
keysize - Å° »çÀÌÁî. bit length·Î ÁöÁ¤µÈ ¾Ë°í¸®Áò¿¡ ƯÁ¤ÀÇ ¸ÞÆ®¸¯½º
¿¹¿Ü:
InvalidParameterException - Å° »çÀÌÁî°¡ À߸øµÇ¾î ÀÖ´ÂÁö, Áö¿ø µÇ¾î ÀÖÁö ¾ÊÀº °æ¿ì

init

public final void init(int keysize,
                       SecureRandom  random)
»ç¿ëÀÚ°¡ Á¦°øÇÏ´Â ³­¼öÀÇ ¹ß»ý¿øÀ» »ç¿ëÇØ, ÀÌ Å° Á¦³×·¹ÀÌÅ͸¦ ƯÁ¤ÀÇ Å° »çÀÌÁî¿¡ ÀÀÇØ ÃʱâÈ­ÇÕ´Ï´Ù.

ÆĶó¹ÌÅÍ:
keysize - Å° »çÀÌÁî. bit length·Î ÁöÁ¤µÈ ¾Ë°í¸®Áò¿¡ ƯÁ¤ÀÇ ¸ÞÆ®¸¯½º
random - ÀÌ Å° Á¦³×·¹ÀÌÅÍÀÇ ³­¼öÀÇ ¹ß»ý¿ø
¿¹¿Ü:
InvalidParameterException - Å° »çÀÌÁî°¡ À߸øµÇ¾î ÀÖ´ÂÁö, Áö¿ø µÇ¾î ÀÖÁö ¾ÊÀº °æ¿ì

generateKey

public final SecretKey  generateKey()
ºñ¹ÐÅ°¸¦ »ý¼ºÇÕ´Ï´Ù.

¹Ýȯ°ª:
»õ·Î¿î Å°

JavaTM 2 Platform
Standard Ed. 5.0

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