How many bytes of data does AES 256 encrypt at one time?
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Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
asked 11 hours ago
joshkmartinezjoshkmartinez
93
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add a comment |
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Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
asked 11 hours ago
joshkmartinezjoshkmartinez
93
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
8 hours ago
add a comment |
$begingroup$
Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
asked 11 hours ago
joshkmartinezjoshkmartinez
93
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
Since the block size of AES 256 is 256, how would we calculate the bytes of data AES 256 encrypts at one time?
aes aes256
aes aes256
asked 11 hours ago
joshkmartinezjoshkmartinez
93
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 11 hours ago
joshkmartinezjoshkmartinez
93
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 11 hours ago
joshkmartinezjoshkmartinez
93
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 11 hours ago
joshkmartinezjoshkmartinez
93
asked 11 hours ago
joshkmartinezjoshkmartinez
93
93
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
joshkmartinez is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
8 hours ago
add a comment |
$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
8 hours ago
$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
8 hours ago
$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
8 hours ago
add a comment |
1 Answer
1
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$begingroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 11 hours ago
kelalakakelalaka
8,35822351
$endgroup$
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
10 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
7 hours ago
add a comment |
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1 Answer
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oldest
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1 Answer
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active
oldest
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$begingroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 11 hours ago
kelalakakelalaka
8,35822351
$endgroup$
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
10 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
7 hours ago
add a comment |
$begingroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 11 hours ago
kelalakakelalaka
8,35822351
$endgroup$
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
10 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
7 hours ago
add a comment |
$begingroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 11 hours ago
kelalakakelalaka
8,35822351
$endgroup$
AES has always 128-bit block size with 128,192 and 256-bit keyspaces. Therefore, you can encrypt 16-byte at a time if you are using ECB and CBC modes. By using CTR mode you can encrypt 1-bit to 128-bit.
Some people confuse AES with Rijndael where AES is a variant of the Rijndael. Some old libraries use the Rijndael (see RijndaelManaged). Rijndael can have 128, 160, 192, 224, and 256-bit block size. Note that these are not standardized, see FIPS 197.
answered 11 hours ago
kelalakakelalaka
8,35822351
edited 8 hours ago
answered 11 hours ago
kelalakakelalaka
8,35822351
answered 11 hours ago
kelalakakelalaka
8,35822351
answered 11 hours ago
kelalakakelalaka
8,35822351
8,35822351
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
10 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
7 hours ago
add a comment |
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
10 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
7 hours ago
1
1
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
10 hours ago
$begingroup$
So both AES 128 and AES 256 encrypt 16 bytes at a time?
$endgroup$
– joshkmartinez
10 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
7 hours ago
$begingroup$
@joshkmartinez Yes. 128 & 256 refer to the key size, not the block size. The block always remains at 128 bits/16 bytes. One way to look at it, is that the AES block (rectangular) gets deeper, rather than wider.
$endgroup$
– Paul Uszak
7 hours ago
add a comment |
joshkmartinez is a new contributor. Be nice, and check out our Code of Conduct.
joshkmartinez is a new contributor. Be nice, and check out our Code of Conduct.
joshkmartinez is a new contributor. Be nice, and check out our Code of Conduct.
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$begingroup$
There are ways of doing AES in parallel, so you could be doing a bunch of bytes at one time, crypto.stackexchange.com/questions/34740/…
$endgroup$
– daniel
8 hours ago