From a3ab09c821437ace80814f355d5c564b3b5b5ccd Mon Sep 17 00:00:00 2001 From: Fede Date: Fri, 28 Aug 2026 09:50:49 -0300 Subject: [PATCH] wip apuntehoy --- seguridad/2.org | 31 +++++++++++++++++++++++++++++++ seguridad/2.png | Bin 0 -> 6500 bytes 2 files changed, 31 insertions(+) create mode 100644 seguridad/2.org create mode 100644 seguridad/2.png diff --git a/seguridad/2.org b/seguridad/2.org new file mode 100644 index 0000000..1e5ab9c --- /dev/null +++ b/seguridad/2.org @@ -0,0 +1,31 @@ +#+title: Hashes - Clase 3 +#+author: Fede +#+email: federico.nicolas.polidoro@gmail.com + +* Caracteristicas +- No se le puedeh calcular la inversa porque hay datos truncados. +- Tienen longitud Fija. +- Es imposible encontrar una colision. + +* PGP +Pretty good Privacy, + +#+begin_quote +Diagrama parecido al que tiene el profe +#+end_quote + +#+begin_src plantuml :file ./2.png +@startebnf +Dato = [MD5, RSA], zip, (AES | RSA), base64; +@endebnf +#+end_src + +#+RESULTS: +[[file:./2.png]] + +* Transaccion +Una de las cosas de las transacciones es que no se puede volver atras al no ser que se interponga la justicia, hablo de transacciones bancarias, por eso la criptografia es tan importante en cosas como las criptomonedas, ya que es iposible modificar los bloques que ya estan firmados y aceptados por la gente. + +* Tarea +- Porque no se puede modificar un nodo anterior? +- Es posible adaptar una contabilidad a un estilo blockchain? diff --git a/seguridad/2.png b/seguridad/2.png new file mode 100644 index 0000000000000000000000000000000000000000..d94ef3db47d6ccced4e1f94f3f220ad34890d91a GIT binary patch literal 6500 zcmeAS@N?(olHy`uVBq!ia0y~yU_8UXz)-`%#K6Fi%_1(qz`&qY;u=wsoL^9xlbTk- z;GUY7T9jClnxc?YsgO}pQc!HAuV0Xpm{(Goo1>SUpIdhBlsp3i!~4vTh!U7M10w?i zL&Y4|KHuzS2Z@&VzqOyONN5t}y%yB5c3Z+!Hs2ym+ckyC+$VP@+P6&m_hXjRi_)}t z?UB-_w~E@zMjl*yNZD?d66b}opXm+xm7EWrrnb+|e#HJ_r{L-zjcZwX>qTzQvA7u< zoGf(9!*xfrTjCU**be(I`S^e$o{{&I}c}rZ?zx-kO-6s0z#NCtUjyUp8 zI>xj6?P;Y{)8!XG7M5`zo_F=l)p*HMeSev5o(lH4?_>9ifkFJ2r;B4qMcmuDl?5WM zzmGdVv5V_t;FMDkVPxsm;Ba*8YiQtz=yFh8&h)TdX?a6TQFoY$3|A9}lKBiK)dgVz zEcX}$r(9+b`mWDM^KSn%fk@4VTGmv+ybJNNF*GkN>w+iy$TRbBP_<;;KQE^prK z-+qHrv1Nu^#~cR^#UtebDV&N&Tr@Vd2qYpGW=gz&W-X0!bTY6@Op|n}fj@sYbV$OBWHqZa}>-G8~EyWfQ zgF78>wq{>&0UlfTUgBJb?WRWeI2$oYU_j@si(!>*!}c=eio9oodb#+aov9hxB%Ec0Q!2c+ zCNeTIQr5cc&E4JRLi{oo4M%3okO*X(wc19{qW)ja$w{i(Au9?V9%6lS?D%oz*H5R% zhlP4_C?4z-oG5EoV*ww@LxF9gb7 zUtd2zSQTW&E|+Z{6P29X`DBe!JZ78aa*1k*NJ;Ig`C0VDZ=Q|h&bPO>`}_Fh+}M!# z^3u}N)AjY^`g?nNT&^v0?Y?yRvf|c$n@=2lv&{4F^~qY#GSBZ@qv}2FM7$e^qGP+> z#LyK13!QeCz1^03TdhbxX2*vM&ismdT{?w|pPiX$kjS(x``Vh$H7_qOPnPbI5f^X2 zyJgFk<@2h%LYVY_yxo3(U-9$4SJfPfDi(#xoAMgNoU;D^dab{)`tPr=(cAMnb2&=N z%D&xQRQCJo>hSY(EDzUf2sm-^-2(@kXURL<{nBcuescY+EwZrGG|8YbwS0}?XVsF*fn{CnzzD|dqYVCd&8`+O zulUV%c5?I_`GAzp`3>T2um7DjzrUyGY1din0OnVYxnUpPJUIO8lwPh*>ejmt5C1w| zz^qZ5%3427$@>pWTEW_=t)H$oxY(}HwX%x(C$;}^^zJPi`>vM#m&#+f7@o1@PTqd! 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